URL to the last version of the Ada Reference Manual.

This template shouldn't be used directly, it is used internally by other templates.

Usage:

 {{Ada/URL RM|13|5|3|par=2|id=I4589|base-url=...}}

Gives:

http://www.adaic.com/standards/05rm/html/RM-13-5-3.html#I4589

All parameters but the first one are optional.