What do codes "O", "T", "X", and "N" mean on Wal-Mart receipts?
136612
Am I being charged taxes on my grocery purchases at Walmart?
87305
What do two question marks together mean in C#?
20343
What does {0} mean when found in a string in C#?
54633
What's the difference between an "encoding," a "character set," and a "code page"?
141904
What are the rules for equals signs with big-O and little-o?
61273
What do these ( += , -= , *= , /= ) Operators Mean?
140432
What does  denote in C#
5910
What does the 'd' mean in ls -al results and what is that slot called?
28013
How to write down a product with omitted terms?
8818
What does the ">" (greater-than sign) CSS selector mean?
22616
Difference between “with”, “at” and “for” with a business title and a company name
52747
What's up with Java's "%n" in printf?
6448
Reference - What does this regex mean?
113394
What does O(log n) mean exactly?
136641
Can someone explain the dollar sign in Javascript?
133028
What does a flight code identify?
39562
What does 'u' mean in a list?