Error when using hold on

Due to some things, I previously used and followed this command (and knowing later that I should not have done that):

>> movefile('/Applications/MATLAB_R2017b.app/toolbox/matlab/graphics/hold.m', '/Applications/MATLAB_R2017b.app/toolbox/matlab/graphics/was_named_hold.m')

After this, I received "Previously accessible file "/Applications/MATLAB_R2017b.app/toolbox/matlab/graphics/hold.m" is now inaccessible."

Following a suggestion from the community, then I typed the command: "rehash toolboxcache". First try, it did not work (even after restarting MATLAB). I tried typing "which hold" and got this:

>> which hold

/Applications/MATLAB_R2017b.app/toolbox/matlab/graphics/hold.m

When I run my code to plot something, it gave me the error like this:

Error: File: hold.m Line: 1 Column: 25

The input character is not valid in MATLAB statements or expressions.

I then opened the file hold.m and I attached it along with this question. I appreciate if someone could help me guiding to solve this.

Thank you.

Dini

PS: I used MATLAB 2017b and also attached my script that uses hold on function.

[Stephen23]

"knowing later that I should not have done that"

Just to make it clear for anyone reading this thread: do NOT move, modify, edit, etc. any of MATLAB's toolbox files.

Also: do not save your own Mfiles in the installation folders of any application!

[Dini Nurfiani]

Thank you. Noted.