PRINT AT 23,0 and FOR NEXT Loop not working after Fastcall

[boriel]

I understand and have to check where my original BASIC program "runs out of screen".
However, one question:
When I have a program with this two lines:

PRINT AT 24,0;"24,0"
PRINT AT 10,0;"10,0"

I think a regular PRINT position should reset the "Out of Screen" flag ?

Unfortunately not. For speed reasons, only errors are "signaled". If a PRINT is ok, no flag is reset.