Common Look - Block Separators

It is advisible to separate distinct function bodies in implmentation files with spearating comments in a form similar to:

//---------------------------------------------------

or

//##################################

or any other ascii art that will mark where one definition ends.

Such separator should have the length of the chosen maximum length of a single code line (ie, if a given file has 100 character limit for line length, then separators should be 100 characters long