HEIDENHAIN TNC 640 (34059x-02) - Manual (Page 134)

Programming: Programming aids
4.2 Display of NC Programs
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TNC 640 | User's Manual
HEIDENHAIN Conversational Programming | 5/2013
4.2 Display of NC Programs
Syntax highlighting
The TNC displays syntax elements with various colors according
to their meaning. Programs are made more legible and clear with
color-highlighting.
Color highlighting of syntax elements
Use Color
Standard color Black
Display of comments Green
Display of numerical values Blue
Block number Purple
Scrollbar
You can move the screen content with the mouse via the scrollbar
on the right edge of the program window. In addition, the size
and position of the scrollbar indicates program length and cursor
position.