DigitBlock

DigitBlock
is an option for NumberForm and related functions which specifies the maximum length of blocks of digits between breaks.

The default setting is DigitBlock->Infinity, which specifies that no breaks should be inserted.

DigitBlock->{nleft, nright} inserts a break every nleft digits to the left of the decimal point, and every nright digits to the right of the decimal point. »

The setting for NumberSeparator determines what string should be used at each break. »

Separate integer digits in blocks of 3:

Out[1]//NumberForm=

Separate real digits in blocks of 2:

Out[1]//NumberForm=

Use three-digit blocks on the left of the decimal and two-digit blocks on the right:

Out[1]//NumberForm=

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