I'm looking at the keyboard shortcuts for code folding in PHPStorm. Their documentation and the keymapping settings for these commands show this weird grey symbol, see here:
I have no idea what this refers to - does anyone have any idea what the default keyboard shortcuts for these commands are on OSX?
The "grey symbol" means numeric pad.
In your specific context it means the "star on num pad" key -- so the first shortcut would be Command + Num Pad *
and then 1
.