If a colon is required in the sentence in which the abbreviation occurs, there is no rule against a period preceding the colon.
A colon placed after the word including is not correct; this is because a colon should follow only independent clauses, which cannot end with that particular word. In other words, if you can correctly write a period in place of the colon, the colon's use is correct.
In typing, proper style is 2 spaces after a period (.), as well as after a colon (:).
I like how you don't give us the options: Ahole
I was taught it was two. A good way to remember this is by counting the dots on it. The colon has two so it has two spaces. A semi colon has only one dot, and it has only one space after it. But this only applies when the name of the punctuation has the word "colon" in it, as when you are counting the dots in a period, you only see one, but after a period, you usually put two spaces unless you are using a wesite address or something of that sort.
Master chefs agree that one characteristic is essential for all ingredients: freshness
A colon placed after the word including is not correct; this is because a colon should follow only independent clauses, which cannot end with that particular word. In other words, if you can correctly write a period in place of the colon, the colon's use is correct.
To enter the correct range in a function by typing the beginning and ending cell references separated by a colon (:). For example, if you wanted to sum cells A1 through A10, you would write it as =SUM(A1:A10). This tells the function to include all the cells between A1 and A10 in the calculation.
The colon is a punctuation used for many purposes. It itself is a symbol, properly called a punctuation. This is a colon: simply a period with a period on top. This looks similar to the semi-colon, which looks like this ; a comma with a period on top.
In place of a period
A period or a colon.
A semi colon is a period with a comma just beneath it.
Normally it would use a period. A colon is used where a number of values follows in a sentence, but may be used where there is a bulleted or itemized list (depends on style).
A semi-colon can be used to separate 2 sentences (2 complete thoughts), in place of a period.
In typing, proper style is 2 spaces after a period (.), as well as after a colon (:).
Colon
The correct punctuation for the business greeting "To Whom It May Concern" is a colon.
The correct answer is salts