List item counter

This online program enumerates all list items and adds a counter before each item. For example, if you have a list of letters "a, b, c", you'll get a numbered list with each letter's ordinal position appended before it "1. a, 2. b, 3. c". Before adding the numbering, you need to properly separate the list items. Since a list can be of any format, you can delimit its items by a character or a regex delimiter. Select the mode you need in the first block of options and specify a character or regular expression in the textbox. Here you can also specify a separator character for the output numbered list. We have added a bunch of options that let you customize the numbering. First of all, you can choose which numerical system to use for the item numbers. They can be regular integers (i.e. "1, 2, 3, …"), lowercase alphabetic letters (i.e. "a , b, c, … "), uppercase alphabetic letters (i.e. "A, B, C, …"), lowercase Roman numerals (i.e."i, ii, iii, … "), or uppercase Roman numerals (i.e."I, II, III, … "). Additionally, you can choose the numbering format. For example, it can be a counter with a parenthesis (i.e. "1) 2) 3)"), with a square bracket (i.e. "1] 2] 3]"), or with a period (i.e. "1. 2. 3."). If you want to specify a custom numbering format, select the "custom" mode, and specify the numbering pattern using the special notation "%n" for the counter. For example, the pattern "%n: " will generate numbering with the counter followed by a colon, such as: "1: …, 2: …, 3: …", and the pattern "{%n} " will generate numbering with the counter wrapped in curly braces, such as: "{1} …, {2} …, {3} …". The program also has several quick and useful options for skipping counting the empty items, reversing numbering so that the item counter goes from the largest value to the smallest, and starting counting from zero, which is useful for programmers. Listabulous!