Using Custom Format for Numbers, Dates and Text

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What is 'Custom Format' ?:
Microsoft Office Excel provides many built-in number formats, but in some cases they do not meet our needs, we can customize a built-in number format to create our own.

Why 'Custom Format' and not 'Conditional Formatting'?: because to cure 'Common Cold' we go to doctors not surgeons. Exactly, when there is a simple and robust way then why to go otherwise. There are many benefits of using custom format including these:
1. Less overhead than Conditional Formatting.
2. Values can be used easily in formulas (Less manipulation required).
3. Charts looks better with custom colored labels/axis.
4. Works on all versions of Excel.
and many more which you can figure out using your innovative mind after reading this article.

Examples:
Let's move with some examples of various data. Essentially, examples makes this subject simple.
I - BASIC EXAMPLES
COMMENTS TO DISPLAY AS USE THIS
Leading Zeros 26 0026 0000
Phone Number 9999404843 999-940-4843 000-000-0000
Day of the Date 26/05/1984 Saturday dddd
Month of the Date 26/05/1984 May mmmm
Comma Place holder 23456789 23,456,789 #, ###
Currency 2605.5 € 2,605.50 € #,###.00

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