rslt ← {blank} ##.dxb argt                  ⍝ Drop eXtraneous Blanks.

Both  leading  and  trailing blanks are dropped and multiple sequences of blanks
are replaced by a single one. If the argument is of higher rank, blank "columns"
are removed.

Technical note: dxb ≡ deb∘dmb

Examples, See: Blank_removal

See also: dab deb dlb dmb dtb

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