It would be helpful to document the minimum version(s) of Mac OS X / macOS that are supported by the binaries/source.

It seems that for v1.0.0-beta.6 binaries the minimum Mac OS X version is 10.10 (which I guess is driven by the use of Qt 5.9).

[Unrelated: This is a really nice overview of the evolution of the project and your process/learning: <http://docs.dust3d.org/en/latest/origin_and_fu

Writing tutorials would help standard CAD users to try declarative parametric CAD.

I'm using CAD quite a lot, Onshape, SolidWorks and FreeCAD. I also develop a lot in C++ and despite this I would like to have a reference document on how to get started with declaracad.

I can find one OpenCascade tutorial and that's it:
https://www.opencascade.com/doc/occt-7.0.0/overview/html/occt__tutorial

In animation mode the Model class rejects add/delete but Edit Groups and Edit Materials (and possibly others, projections?) still add or deletes items from list. The changes are lost after closing the window since it's not saved in Model.

addGroup() etc return -1 on failure but it's not checked. I made deleteGroup() etc return false in 7c20fc2a310ba36c3cd817d155c03f0928ee01f2 but it's o

Subject

When exporting png files, the filenenames get longer with each page

Environment

• Version of LPub3D - 2.3.14.1
• Operating system - Ubuntu 16.04

Steps to reproduce

• Produce instructions
• export as png

Expected behaviour

png files should be produced with filenames according to the pattern "model_lpub3d_%2d.png", numbered accordingly

Actual behaviour

Implement the ability to choose various animation playback types such as "loop" or "boomerang". This would be implemented in the handle_animation function.

This is a very simple feature to implement (development time <1 hour).