What is the difference between a tab and an indent?
A “tab” is actually a character that instructs most text editors, word processors, printers etc. to advance printing to the next “tab-stop”, the definition of which varies depending on context. E.g., in old text editors, there is a default “tab-stop” every 8 character positions. In more modern word processors, there is a default “tab-stop” every half an inch. An “indent” is how far a paragraph starts from the left margin. It may be at a “tab-stop” or not, again depending on context. Also depending on context, it might refer to just the first line of the paragraph being indented, or it may refer to the entire paragraph being indented.