Jeff AtwoodAdded a well deserved reward bounty to a Mac question -- I had no idea Macs DO NOT allow you to move word by word with keyboard shortcuts out of the box! https://apple.stackexchange.com/questions/52147/control-arrow-key-to-jump-to-the-next-word
Paul Haddad 
@codinghorror I think default at least on modern OSes, option arrow moves word to word, control arrow does spaces, command arrow goes to start/end of line, shift arrow selects from where you are.
@paul "modern"? Windows has always been CTRL+arrow for word, e.g. https://blog.codinghorror.com/very-basic-textbox-keyboard-shortcuts/
(Very) Basic Textbox Keyboard Shortcuts
Everyone knows how to use the arrow keys to navigate within textboxes. But not many people know there are a slew of handy keyboard shortcuts for editing text in textboxes. And these keyboard shortcuts work everywhere, even in the most basic input areas – including vanilla HTML forms, such as the
@codinghorror I meant modern Mac OSes, probably for a long long time, but I just don't remember if it was the same 10-15 years ago (but probably).
Gil Pedersen@paul @codinghorror Yeah, I think I have been using it for 20+ years.
Chris Hanson@kanongil @paul @codinghorror The Mac standard has been, since 1986-1987:
- Arrow keys move the insertion point;
- Home/End/Page Up/Page Down move the vertical scroll bar;
- Option “scales up,” so left/right moves by word, up/down by page;
- Command “scales up” more, so left/right move to beginning/end of line, up/down move to beginning/end of document; and,
- Shift adjusts selection.
CodeWarrior added subword InterCap traversal via control-arrows.
@kanongil @paul @codinghorror And all but the subword intercap traversal has been part of the standard NSText keyboard equivalents since Mac OS X 10.0. (I wrote the Radar that got this implemented in AppKit when it didn’t work right in one of the developer prerelease versions.)