Dwm default keys cheatsheet

Basic
=====

[Shift]+[Mod]+[Enter]   - launch terminal.

[Mod]+[b]               - show/hide bar.
[Mod]+[p]               - dmenu for running programs like the x-www-browser.
[Mod]+[Enter]           - push acive window from stack to master, or pulls last used window from stack onto master.

[Mod] + [j / k]         - focus on next/previous window in current tag.
[Mod] + [h / l]         - increases / decreases master size.

Navigation
==========

[Mod]+[2]               - moves your focus to tag 2.
[Shift]+[Mod]+[2]       - move active window to the 2 tag.

[Mod] + [i / d]         - increases / decreases number of windows on master
[Mod] + [, / .]         - move focus between screens (multi monitor setup)
[Shift]+[Mod]+[, / .]   - move active window to different screen.

[Mod]+[0]               - view all windows on screen.
[Shift]+[Mod]+[0]       - make focused window appear on all tags.
[Shift]+[Mod]+[c]       - kill active window.
[Shift]+[Mod]+[q]       - quit dwm cleanly.

Layout
======

[Mod]+[t]               - tiled mode. []=
[Mod]+[f]               - floating mode. ><>
[Mod]+[m]               - monocle mode. [M] (single window fullscreen)

Floating
========

[Mod]+[R M B]           - to resize the floating window.
[Mod]+[L M B]           - to move the floating window around.
[Mod]+[Space]           - toggles to the previous layout mode.
[Mod]+[Shift]+[Space]   - to make an individual window float.
[Mod]+[M M B]           - to make an individual window un-float.

I saw a Reddit comment mentioning that Ctrl+Shift+PageUp can increase font size, and it works on my dwm setup. However, I couldn't find where this keybinding is defined in my configuration files. Could someone please point me to the correct location?