Commonly Used BSI Proofreading Symbols

Mark in Text Mark in Margin Instruction

Substitute

Insert

Delete

Close up horizontally

Insert space between characters

Substitute or insert quotation mark or apostrophe

Substitute or insert full stop or colon

Substitute or insert hyphen

Transpose (swap) characters or words

Change to italics

Change to bold

Insert thin space (between characters)

This is just a selection – there are many others!