Defining a custom string format
You can define a custom string format using special symbols to construct a format pattern. Table 3-7 describes these symbols.
Character placeholder. Each @ character displays a character in the string. If the string has fewer characters than the number of @ symbols that appear in the format pattern, spaces appear. Placeholders are filled from right to left, unless you specify an exclamation point (!) at the beginning of the format pattern. See Table 3-8 for examples.
Table 3-8 shows examples of custom string format patterns and their effects on string data.
6175551007
5551007
(617) 555-1007
(   ) 555-1007
6175551007
5551007
(617) 555-1007
() 555-1007
6175551007
5551007
(617) 555-1007
(555) 100-7
6175551007
5551007
(617) 555-1007
(555) 100-7
!(@@@) @@@-@@@@ + ext 9
(555) 100-7    + ext 9
!(&&&) &&&-&&&& + ext 9
(555) 100-7 + ext 9
>&&&-&&&&&-&&
D12-34567-XY
<&&&-&&&&&-&&
d12-34567-xy

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