[DOCs] Missing Definition for backslash

[Kay C Lan]

Hi,

before I write to userguide at runrev.com and indicate that there is no entry
for '\' I just want to confirm that I'm not missing anything. There are
plenty of code examples that run on to the second line but I just can't see
anywhere where it spells out that that is what \ is used for.

Also in the electronic DOCs Dictionary. You can do a search for \, but
clicking on it, I don't get anything.

If someone else can confirm, I'll submit.