Topic: as used command & command-s

[Lee Mac]

I have no idea what the difference between "circle " "_circle" and "._circle"

See here & here.

[velasquez]

I do not understand the problem with command and command-s
I copied the lines below the help of AutoCAD 2015.

"(command-s "._circle" (getpoint "\nSpecify center point: ") "_d" 2.75)"
Turns out the lines of code work fine in AutoCAD 2015 and 2012.
1

Code: [Select]

(command-s "._circle" (getpoint "\nSpecify center point: ") "_d" 2.75)2

Code: [Select]

(command "._circle" (getpoint "\nSpecify center point: ") "_d" 2.75)
Can someone explain me better how to reproduce the error that is as reported.
I better understand all the comments about it.
Thanks

Sorry I forgot to post the text of the AutoCAD 2015 help file.
"The following is an invalid use of prompting for user input with the command-s function.
(command-s "._circle" (getpoint "\nSpecify center point: ") "_d" 2.75)"

[RC]

I'd personally take the time to go through the code and fix it though.

If it ain't broke, why 'fix' it?
I 'know' AutoCAD, I don't 'know' autolisp (or any of its variants) or C++ or V<whatever>. 
I write what I know in order to make my cad production faster, not to go back and re-write cr4p with every new release.  I see nothing at all 'broken' about using command calls .. until someone mucks with the program to make such legacy calls an issue.