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  1. Licensed Entities
  2. Free License
  3. Demo License
  4. Trial License
  5. Full License
  6. Promo License
  7. Licensing of Templates
  8. Multiple Licenses
  9. Getting Help

1. Licensed Entities

By its nature, FlexDoc software can be described simultaneously in three different categories:
  1. A software development tool, which manifests itself as the Template Designer (as well as the template language it visualizes).
  2. A run-time environment, which is the Template Interpreter / Output Generator.
  3. Template applications that implement particular end-user tasks (e.g. XML Schema Documentation Generator).
Although, those pieces represent parts of the whole software system, essentially, they are intended for very different purposes. Therefore, not everyone needs all of them. Yet each of those parts cost great efforts to develop and cannot be given away totally free.

Breaking the software into different editions does not solve the problem completely, because this cannot cover all possible usage scenarios: either someone will have to pay for what they do not actually need or we are forced to give away valuable features without any compensation for them (and, therefore, will have little funds to develop them further).

The goal of this licensing system is to allow people to pay exactly for what they actually want to use and, at the same time, to keep the integrity of the software as a whole. That is achieved by introducing multiple licenses covering different groups of related features/functionality. These are called licensed entities.

It works as follows. A particular software package is always the same and may include lots of functionality (for instance, FlexDoc/XML or FlexDoc/Javadoc). Without the proper licenses that functionality works only in a reduced or demo mode (see Demo License). When you want to use some set of features grouped under the licensed entity «A», you buy a Full License for «A». If you need more features that belong to the licensed entity «B», you buy another license covering «B». Both (or more) licenses can be installed together. As a result, you get software that does what you need and pay only for what you use.

There are following types of licensed entities:

Licensed Entity Details
SDK (System Development Kit) First of all it includes the Template Designer – a high-quality GUI to create/modify templates. The «SDK license» covering it essentially provides a possibility to create/modify templates. Above that, SDK license may cover some extended functionality of the Generator (see below). SDK license may be a Demo, Trial or Full License.

Currently, there are two SDK licenses:

  1. License for FlexDoc/XML SDK
  2. License for FlexDoc/Javadoc
Template Interpreter / Output Generator This is the run-time environment to execute templates (called «Generator» for short). The result of its working is typically some number of generated output files (that is the output documentation).

The most part of the Generator functionality is provided under the Free License. That is called «free Generator» and always available immediately as the Generator being run.

However, some extended functionality (for instance, the possibility to execute trial templates) is unlocked only in the presence of a Trial/Full SDK License.

Template Application Template applications implement what FlexDoc software is all about – particular documentation generators.

From the point of licensing, all template applications are divided into the following categories:

For more details, please see: Licensing of Templates
Diagramming Plugin Diagramming plugins are special Java-hardcoded modules that generate graphical representations (i.e. charts, diagrams) of various things described by the data processed by the templates.

Although diagramming plugins are held in the same single FlexDoc executable jar-file, they are not parts of the Generator. Rather, they may be considered as functional extensions of particular template applications and are controlled and invoked from the templates. See also: FlexDoc/XML | Features | Diagramming Plugins

Currently, there are three diagramming plugins:
  1. FlexDoc/XML DiagramKit
  2. FlexDoc/XML XMLSpy Integration
  3. FlexDoc/XML OxygenXML Integration

For more details about how different licenses work together, please see: For help to decide which exactly licenses you need take a look here:

2. Free License

Free License is provided for some Filigris Works software components to allow using them free of charge.

The most important of such components is the Generator, which allows you to run the template applications. Others are Basic Templates.

Generated Output

When the output documentation was generated only under Free License(s), it is free for any possible usage. In particular: When, during the generation of any output files other types of licenses were involved, the whole result is governed by those licenses.

See also: Multiple Licenses

3. Demo License

Demo License is currently provided for some Filigris Works software components.

Demo License is available free of charge once you have downloaded the software covered by it. The license is activated automatically each time you run the software (and no corresponding trial or full license found). No registration is required for that.

Under Demo License, the software works in demo mode, which is interpreted as follows:

Software Type How it works in Demo Mode
Commercial Template Applications No limitations on whatever functionality. However, only limited number of major items (e.g. XSD components, Java classes etc.) are fully documented, which depends on the demo limits embedded in a particular template set (and main template) you run.

When the demo limits are not exceeded (on small input data/projects), you will get the complete documentation without any distortions! Otherwise, some content will be omitted and the messages included saying which exactly limits were exceeded. Anyway, the result documentation will be minimally distorted to allow you to evaluate how everything would look under the Full License.

Diagramming Plugins No limitation on whatever functionality. However, only limited number of diagrams is generated according to the demo limits embedded in a particular template set (and main template) you run, with which the plugin works.

When the demo limits are not exceeded, you will get all diagrams! Otherwise, some diagram sections in the output will show up with omitted content and the messages included saying which exactly limits are exceeded. Anyway, those diagrams actually generated will be complete, with all possible hyperlinks and undistorted with any watermarks. So, you will be able to evaluate how everything would look when generated under the Full License.

Template Designer You will be able to investigate any functionality, however unable to save any created/modified templates.

Demo License has no limitation in time. You may use the software under the Demo License as long as you comply with the license terms.

Generated Output

The output documentation and diagrams generated under Demo License are free for any possible use. In particular:


Demo License does not allow you to create or modify any templates.

Template Designer will work only in demo mode. You will be able to investigate any functionality, however unable to save your created/modified templates.

For further information, please see: Licensing of Templates

4. Trial License

Trial Licenses are provided for those software components of Filigris Works that are available for Commercial Licensing.

The purpose of Trial license is to allow you for free to evaluate all functionality you are interested in (and check that everything works properly as you expect) before buying the corresponding Full License.

Note that some complex functionality you want may be covered by several licenses simultaneously. For instance, the generation of XML schema documentation with component diagrams is covered by two licenses:
  1. License for FlexDoc/XML XSDDoc – covers the implementation of XML schema documentation generator itself
  2. License for FlexDoc/XML DiagramKit – covers the diagramming plugin
See Also: Multiple Licenses
Under a Trial License the software will work the same as under the corresponding Full License: A Trial License is generated automatically per your request and the license certificate is emailed to the provided address. The license certificate represents a plain text file with the information about your license. The received license file should be installed together with the installed Software according to the provided instruction.

A standard Trial License is valid for 30 days. You may request for an extension of your Trial License for another 15 days (30 days). However, that possibility may be limited.

If you have any problems or questions concerning your trial, please let us know by sending an email to:

Generated Output

Any output files generated under one or multiple Trial Licenses may be used for evaluation purposes only. You are strictly prohibited to use the generated documentation (or any parts of it, including diagrams) for any other tasks.

To enforce that condition

As soon as you acquire the corresponding Full License(s), no text distortion, trial messages or watermarks will appear!


You may create/modify any templates under a Trial License that covers the Template Designer (i.e. SDK license).

For further information, please see: Custom Templates

5. Full License

In some texts on this site, the Full License also referred to as «Commercial License», and the software components, to which it is available, – as «commercial» ones.

Under this term, the Software provided by Filigris Works is licensed to a specific individual person or legal entity.

The Software is priced on a per-user basis and any license specifies the authorized number of users, the licensee name, organization and e-mail address.

Each Full License is a floating license. It means that the license may be installed on any number of computers and used by any number of people, provided that the number of concurrent users never exceeds the number of licensed users.


FlexDoc Software currently does not include any specific license manager that checks the number of concurrent users. You should ensure this by yourself so as to comply with your license. If you cannot control it you should buy more licenses (e.g. for each of the potential users)!

The Software (or any part of it) licensed under the Full License may not be redistributed separately or as a part of any other application. However, any output produced by the Software (including the template files created with it) may be freely distributed without limitations.

The Full License permits of using it to only a specific individual person, who purchased the license, or members of the licensee company/organization as a single legal entity.

The license may not be transferred to any other company/organization or individual, except the direct successor of the licensee who takes over the full legal rights and responsibility over the licensee business.


The Software is only available through electronic delivery via Internet (see downloads). The fully functional version of the Software is unlocked by the license certificate (key) sent to the user via e-mail to the specified e-mail address.

The license certificate represents a plain-text file with the information about the license and the licensee. The license file should be installed together with the Software according to the provided instruction.

Maintenance and Support

Each Full License includes the following maintenance and support:

Upgrade Possibilities

The owners of a Full License are eligible for free upgrades within the same generation (major version) of the licensed Software product. For example, if you purchase a license for the Software version 1.0, your license is automatically extended to versions 1.1, 1.5.1 and so on.

Besides that the Full License is automatically extended to any version of the licensed product (feature) released during 1 year following the license issue date. That, however, applies relative to the whole software package, not a particular product version.


Suppose that at Sep-2021, you have purchased a license for FlexDoc/XML DiagramKit, which is a part of FlexDoc/XML software package. At the time of your purchase:

  1. DiagramKit was version 1.1 – so, your license covers the major version 1.
  2. FlexDoc/XML was version 1.12.5 – that version number is mostly for the reference (although, the SDK License is attached to it).
At Oct-2021 (the next month after your purchase), we have released a new version of FlexDoc/XML, which includes some improvements of various things: some more, some less. Now, the version numbers became the following:
  1. DiagramKit version 2.0 – that is, some major improvement of DiagramKit have been made, worth increasing its major version number.
  2. FlexDoc/XML version 1.13
When you return to our website, say at Nov-2021, and see those changes, you may feel disappointed: Your recently purchased license for DiagramKit covers only major version 1. But now, just a month later, it became the major version 2 and you seem cannot use it. To avoid that, your license is extended to anything (any version of DiagramKit) released during the year after your purchase. So, you may use DiagramKit in that new release as well!

Now, suppose that a year later at Oct-2022, we have released a yet another version of FlexDoc/XML that it includes:

  1. DiagramKit version 2.1 – no much changes about DiagramKit.
  2. FlexDoc/XML version 1.14 – other great things have been added/improved elsewhere.
Can you use your old DiagramKit license with that new FlexDoc/XML v1.14 too? No. Because your old license covers only the major version 1 and more than a year has passed since your purchase. But you may still use FlexDoc/XML v1.13 and everything contained in it.
To upgrade to a new version of the product covered by your license, you need just to download the new version of the corresponding software package and install it together with your license certificate. Each new software version is designed and tested to support any early issued licenses covering it.

Generated Output

The Full License imposes no limitations on the generated output files. In particular: Any text distortion, which you may see within the documents generated under the Trial License, will disappear once you have installed the Full License.

However, if during the generation of some files any Trial Licenses were involved, the whole output is considered as the trail one.

See also: Multiple Licenses


The Full SDK License (i.e. the one covering the Template Designer) allows you:
In order to run any custom templates derived from a CTA, additionally, a Trial/Full License for that CTA is required.

See also: Licensing of Templates

6. Promo License

Promo License is an equivalent of Full License and can be given to anyone for free. Instead of paying cash, you are required to help us promoting our software on Internet (particularly to search engines).

To apply for a Promo License, you need to fulfil either of the following:

Please, send us your Promo License request or any other questions to:

7. Licensing of Templates

Basic Templates

These are any templates developed by Filigris Works (and included in the provided software), which are not designated as “Commercial Template Applications”. In particular, this includes: Using of Basic Templates requires no specific licensing. You are equally free to modify such templates and base on them your own template applications (see Custom Templates).

Commercial Template Applications

Commercial Template Applications (or «CTA» for short) are large template sets developed by Filigris Works to implement certain general very complex tasks.

They provide the functionality, which is typically offered by other companies in the form of separate commercial software products (or specific features of them). For example, “FlexDoc/XML XSDDoc” template set implements a high quality XML Schema Documentation Generator.

Each CTA, whatever complex the task it implements, is just a set of FlexDoc templates. (A template is a plain-text file containing specific instructions for the template interpreter; see FlexDoc.XYZ | What are Templates?)

It means that anything the template application is able to generate is programmed entirely within the templates themselves. The template interpreter, the template language and its embedded functions provide only a general basic functionality needed for a particular application field (e.g. XML). For instance, FlexDoc/XML by itself does not “know” anything about specific features you can see in the XML schema documentation generated with XSDDoc templates. Everything is programmed within the XSDDoc templates.

That allows you to quickly change something in the output documentation only by modifying a few related templates. See also: Custom Templates.

Since FlexDoc templates always require a special interpreter for their execution, all CTAs are delivered as add-ins to each edition of the base product line. For example, the XSDDoc template set is included in FlexDoc/XML archive.

On the other hand, because CTAs actually solve some very complicated general tasks, they require separate licensing. So, each CTA has its own product name and version number, to which a license is attached.

CTAs may work under the following licenses:

License Type Details
Demo License This license is activated by default when no other licenses for the given CTA have been found. Under the Demo License, the template application will work in demo mode, which is interpreted as follows:
  • No limitations on whatever functionality. However, only limited number of major items (e.g. XSD components, Java classes etc.) are fully documented, which depends on the demo limits embedded in the template set (main template) you run.
  • When the demo limits are not exceeded (on small input data/projects), you will get the complete documentation without any distortions! Otherwise, some content will be omitted and the messages included saying which exactly limits were exceeded. Anyway, the result documentation will be minimally distorted to allow you to evaluate how everything would look under the Full License.
  • The output documentation generated by a CTA working under the Demo License is free for any possible use.
Full License This license unlocks all functionality implemented in the CTA, with no limitations on the input data, number of documented items, number and size of the output files etc.

Any output files generated by a CTA under the Full License may be used for any purposes without limitations, provided that no other Trial Licenses have been used at that. See also: Multiple Licenses

Trial License This license unlocks all functionality implemented in the CTA, with no limitations on the input data, number of documented items, number and size of the output files etc.

All output document generated by a CTA under the Trial License will be specifically distorted and contain trial messages at the end of each file. Any generated files may be used for the evaluation of this software only.

Custom Templates

In this category fall all templates that were created or modified by the users working under a Trial/Full SDK license (that covers the Template Designer).

This includes:

  1. Any templates developed completely by the users to solve their own specific tasks.
  2. Any templates derived from Basic Templates (i.e. produced by the modification of one or several templates included in a basic template set).
  3. Any templates derived from CTAs (i.e. produced by the modification of one or several templates included in a commercial template set).
Custom templates are subject to the following rules: See Also: Multiple Licenses

Changing Templates Manually

In general, FlexDoc templates should be edited using the Template Designer.

Although, the templates are plain-text files with the format looking somewhat similar to XML (see FlexDoc.XYZ | What are Templates? | About Template Format), there are several reasons why we do not encourage changing templates manually.

One of such reasons is that because of the licensing issues the template structure and content are locked with a special checksum. This prevents easily forging the templates in order to circumvent licensing terms.

However, when you need to quickly replace a certain string simultaneously in a number of template locations or translate lots of text labels into a different language, doing this by changing the templates in a simple text editor might be much faster.

A Trial/Full SDK license allows you to do that. The following things can be changed in templates beyond the use of the Template Designer:

Once you have changed anything mentioned above directly in the template source, the template checksum will be partially broken. However, you can execute such a template with the Generator. When you resave the template with the Template Designer, the correct checksum will be restored again.
If you change any other template settings manually (e.g. definitions of template components), the template checksum will be broken irreversibly. After that, it will be impossible to process anyhow such a template (including opening it in the Template Designer). The same will happen if you spoil the template syntax!

Because of this, we strongly recommend to backup your templates before editing them manually!

8. Multiple Licenses

You may combine (install) several licenses covering different features so as to use all of them together.

For instance, along with a license for FlexDoc/XML XSDDoc – the XML Schema Documentation Generator, you may install a license for FlexDoc/XML DiagramKit – a diagramming plugin that generates XSD component diagrams. As a result, you will get a generator of XML schema documentation with diagrams.

Those licenses may be of different types. You may have a Full License for some feature you've been already using for a while and additionally to install a Trial License for another feature so as to try some enhancement of the functionality you already use.

However, those combined licenses may have contradictive restrictions. So, the question arises: If licenses of different types impose different restrictions on the generated output, which of those restrictions apply to the output files generated under all those licenses?

The resolution is the following:

When to unlock all necessary features of the FlexDoc software several licenses are installed and some of those licenses have different types, the license that imposes maximum restrictions and obligations will have the highest priority.

For example, when some output was generated simultaneously under both Full and Trial Licenses, that will be considered a trial output with all restrictions implied by the Trial License.

The following table shows all matching license types and their priorities (a license with the highest priority takes over all other licenses):

License Type Priority
Trial License 3
Demo License 2
Full License 1
Free License 0


An employee named Joan of some imaginary company called PerfectSoft Ltd. needed a good XML Schema documentation generator for her job task. She found one called “FlexDoc/XML XSDDoc” at this website. It happened to be a set of templates included in a software package “FlexDoc/XML”. When Joan downloaded that software and investigated it, she realized that that was exactly what she needed.

Joan read that if she purchased a Full License for FlexDoc/XML XSDDoc, she would be able to generate a complete framed HTML (Javadoc-like) XML schema documentation that she needed right then. So, Joan asked her company to buy a license for FlexDoc/XML XSDDoc.

Some years later, Joan visited this website again and noticed that a new add-on had been released called “FlexDoc/XML DiagramKit”, which enhanced XSDDoc so to generate and include in the output XML Schema documentation the component diagrams. That was exactly what Joan missed for long time! So, she asked her company to purchase a license for DiagramKit as well. When Joan installed it along with her old license for XSDDoc, started the Generator and invoked the «About» dialog, she saw the following screen:

Multiple Licenses - Example

9. Getting Help

If you have any questions concerning licensing or pricing of FlexDoc software, please, do not hesitate to let us know by sending an email to: