Select all lines you want to add consecutive numbers with cursor.
Default command is "CTRL + ALT + A". press this command.
If there is a character at before cursors(even one thing), It will add consecutive numbers in front of all cursors.
these numbers depend on their cursor order, and will add as "String"
If there is a character at before cursors, It will plus consecutive numbers in front of all cursors's integer value.
these numbers depend on their cursor order too, and will plus as "Integer"