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#### 2.7.13.6 Mapcur

An alternative form of recursive definition is the following.

T27

  [[`mapcur`]] `p` = `((nil,nil),((nil,nil),(p,nil)))`

This form is convenient for applications that cause themselves to be applied recursively to a list of arguments. It has this semantics.

P34

  ([[`mapcur`]] `p`) `x` = [[`map meta`]] [[`distribute`]] ([[`field`]] `p`) `x`

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