Allow to create your own text in 3d, can be easily extruded into a mesh using the
Extrude Shape
Extrude splines into 3D surfaces that can be displayed with Surface
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or if your intent is only to display it with a
Surface
Display geometry's triangles as a surface
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then the
Triangulate
Generate triangles on spline or point primitives to display surfaces
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should be enough.
To display international characters such as Cyrillic / Chinese / Arabic etc., first you must go inside "edit > preferences > application > skin" and change here the skin into custom and the "Fixed Font Choice" into a font supporting your characters (such as Microsoft YaHei for Chinese).
This will allow you to write inside the various text editors.
Now do not forget to change the font of the text layer itself inside its own parameters.