IHELP: Stata module to display the help documents in PDF format using the default browser

ihelp displays the help documents of the specified commands via browsers. help displays the help documents in a simple but inconvenient manner, while Stata manual offers detailed command instructions, and the relevant PDF formats also have better reading experiences. ihelp can open more detailed help documents in PDF format via the browser, which can facilitate reading and translation; it can also list commands similar to the specified command from the Stata manual.