LDCad 1.7 Alpha 2 (win+linux)

[N. W. Perry]

Not related to this Alpha but is there any functional difference between duplicating a part/selection with Ins vs. Ctrl-D

There is, but I'll need Roland to explain it properly. 

(It also depends what the selection is. For example, if you select a comment line in the source window, Ctrl-D will give you a copy of the same comment, whereas Ins will give you a new, blank comment.)