Proposal Tip: How Many Spaces After the Period?
I’ve been doing proposals so long, I know when to use two spaces and when to use one space after the period.
One space after the period is the correct typographic answer for typeface fonts (where www takes up more space than iii).
Two spaces became the standard when typewriters came into use. This is because typewriters cannot perform the delicate operation of providing varying spaces for letters. With each letter equally spaced from another, two spaces greatly enhanced readability of typewritten pages.
If you happen to use a font that emulates typewritten copy, you should use two spaces after the period. (Courier is one example of this type of font. Email is the only place I occasionally see these fonts used). With all fonts that moderate spacing (www takes up more space than iii) you should use one space after the period.
Email