https://gitlab.synchro.net/main/sbbs/-/commit/3247302d708bbf2569409083
Modified Files:
	src/syncterm/syncterm.c
Log Message:
Start UIFC in insert mode.

Per comment on reddit by dialsoft, the lack of an insert key on
laptops can make manipulating the phonebook more difficult.  Since
all the other UIFC functions have an insert alternate, they don't
need any changes now that there's a manual, but for editing a
string, the insert key is the only way to toggle overstrike.

Since the insert mode toggle persists, simply starting in overstrike
mode should be fine.

Maybe some weird control key of function key can be used (though
I guess laptops don't have function keys either anymore).
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