[SYMBOL] [A] [B] [C] [D] [E] [F] [G] [H] [I] [J] [K] [L] [M] [N] [O] [P] [Q] [R] [S] [T] [U] [V] [W] [X] UDTs ( user -defined data types) UML (Unified Modeling Language) 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th 21st 22nd 23rd 24th 25th 26th 27th 28th 29th UML (Unified Modeling Language) class diagrams 2nd 3rd 4th 5th unary minus operator 2nd 3rd unary plus operator 2nd 3rd underscore character (_) line continuation character 2nd Unicode character set Unified Modeling Language (UML) 2nd 3rd 4th 5th 6th 7th 8th 9th 10th 11th 12th 13th 14th 15th 16th 17th 18th 19th 20th 21st 22nd 23rd 24th 25th 26th 27th 28th 29th Unified Modeling Language (UML) class diagrams 2nd 3rd 4th 5th Uniform Resource Locator (URL) units of measurement pixels twips Until loop 2nd 3rd 4th 5th 6th 7th 8th URL (Uniform Resource Locator) User Defined data type 2nd 3rd user interface designs user-defined data types UserControl form users classes 2nd 3rd 4th 5th |