Maybe I'm getting old, but the text in Matlab's built-in help browser is too small for me to read comfortably. It is possible to increase the font size using Ctrl-+, but every time a new help page is loaded, this change is lost
How can I permanently increase the font size?
This has been tested with Matlab R2015a on Linux, but I'd expect it to work on other platforms and maybe earlier versions, too.
Matlab's documentation is in the form of HTML, and the help browser is basically a web browser displaying locally stored files. There are several central style files, but the most important one appears to be
/opt/MATLAB/R2015a/help/includes/product/css/reset.css
Open this file (as root / administrator) in a text editor, and append the line
html { zoom: 1.5; }
Adjust the number to your liking.
for R2014a, in /opt/MATLAB/R2015a/help/includes/product/css/reset.css, alter the value in the field
font-size:100%
to your liking. start with 105% - it's sensitive.
Note that you don't have to restart Matlab, just close the help window and re-open after you save the file. You can iterate quickly to find your desired zoom.
