Can anybody make a tick the sign for correction, as there is no key for it.
Depends what Word you have.
I have 2010. If you have:
On your toolbar select Insert, then Symbol, then in font 'wingdings'. The tick is at 252.
Not specifically for a 'tick' but it may well be there
http://www.alt-codes.net/
Will only work on a keyboard with a Keypad, to use Alt codes hold down the Alt key and type the number
Alt 1 = ?
Alt 2 = ?
Alt 3 = ?
... and so on
I use the square root sign.