how to access the code of any s function

how can i access the code of any s function block so i can understand its operation?

Answer 1

[Paulo Silva]

Block Parameters, press the edit button.

Might not work for all s-functions.

[amal]

it didnt :((( because the function is MEX format and cant be edited. thx for answer

[Paulo Silva]

mex files are compiled code so it's not possible to edit them