Also in native ISPF on a z/OS machine I only have to put a 'd' in the prefix area and hit Enter once and the line is gone. In SE the 'd' will sometimes insert a line on the first Enter and then delete with the next Enter. Kind of a waste of keystrokes. Also moving a line with 'm' or block moving lines with a pair of 'mm' either before 'b' or after 'a' a line doesn't work.
I wanted to address these two other problems you reported with ISPF. I have tried to reproduce them, but could not find any problems either with the 'd' or 'm' commands.
I could create a few error cases that did do anything, but I doubt these are the issues you are seeing.
1) 'a' or 'b' inside the move block.
mm | Line 1
a | Line 2
mm | Line 3
===== | Line 4
2) multiple 'm' commands
m | Line 1
==== | Line 2
m | Line 3
==== | Line 4
b | Line 5
3) with multiple 'mm' commands, only the first one is processed.
Could you give me an example of what you are seeing?
Also, do you use "Enter" or the Right control key to process ISFP line commands?