US Immigration from Chile

Hi,

I am just starting to apply for status change with file I-485.

I want to fill in the files on a computer so I can make edits keep copies easily rather than use pen and ink.

I am on a Mac and the only editor I can find so far that works and allows saving edits (as a copy) is Acrobat Reader.

That is good enough but using Reader several fields do not allow the correct entry.

For example 23.c I=(4 class of admission is B2 and only letters are allowed as an antry.

Some fields should be N/A and the "/" is not allowed.

Any suggestions on a PDF editor app. and or how to remove some of the limits.

Preview on the Mac does not let me save files with entries. I can only save the original blank file.

Thanks Martin