Comment out some part of a line in matlab function

Question

As the question suggests I want to comment out some part of a line in MATLAB.

Also I want to comment out some part of a line not till the end of line.

Reason

Answer 1

Nope, this is not possible. From help '%':

%   Percent.  The percent symbol is used to begin comments.
    Logically, it serves as an end-of-line character. Any
    following text on the line is ignored or printed by the
    HELP system.

So just copy-paste the line, or write a tiny function so that it's easier to switch between versions.