Build, test, and debug regular expressions
Validates non-localized PIM attribute values by ensuring they contain no letters and thus don't require translation. It matches numeric strings with common punctuation/symbols (including Ø), decimal values with 'k' (e.g., 3.5k), temperatures ending in °C, and dimension-like values with an optional 'x' separator (e.g., 10 x 20). With global/multiline flags it checks each line of the attribute independently.