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parse/train/rywDjg-RW/rywDjg-RW.md

@@ -59,7 +59,7 @@ Example 1. Consider the task of formatting a phone number, characterized by the
 
 The program the user is most likely looking for is the one that extracts (a) the part of the input enclosed in the first pair of parentheses, (b) the $7 ^ { \mathrm { t h } }$ to $4 ^ { \mathrm { t h } }$ characters from the end, and (c) the last 4 characters, and then concatenates all three parts using hyphens. In our DSL, this corresponds to:
 
-ConcatSubStr0(RegexPosition $( \boldsymbol { x } ,  ^ { 6 6 } ( ^ { 7 3 } , \varepsilon ) , 0 )$ , RegexPosition $( x , \langle \varepsilon , \overset { \ast } { , } ) \overset { \ast } { , } 0 ) ,$ ), ConstStr(“-”), SubStr0(AbsolutePosition $( x , - 8 )$ , AbsolutePosition $( x , - 5 )$ ), $\mathsf { C o n s t S t r } ( \mathsf { ^ { s \pm } _ { - } } , \mathsf { " } )$ , SubStr0(AbsolutePosition $( x , - 5 )$ , AbsolutePosition $( x , - 1 ) )$ 

+ConcatSubStr0(RegexPosition $( \boldsymbol { x } ,  ^ { 6 6 } ( ^ { 7 3 } , \varepsilon ) , 0 )$ , RegexPosition $( x , \langle \varepsilon , \overset { \ast } { , } ) \overset { \ast } { , } 0 ) ,$ ), ConstStr(“-”), SubStr0(AbsolutePosition $( x , - 8 )$ , AbsolutePosition $( x , - 5 )$ ), $\mathsf { C o n s t S t r } ( \mathsf { ^ { s \pm } _ { - } } , \mathsf { " } )$ , SubStr0(AbsolutePosition $( x , - 5 )$ , AbsolutePosition $( x , - 1 ) )$ 

 
 where $\varepsilon$ is an empty regex, $\mathsf { S u b S t r } _ { 0 } ( p o s _ { 1 } , p o s _ { 2 } )$ is an abbreviation for “let $x = { \mathsf { s t d } } . { \mathsf { K t h } } ( i n p u t s , 0 )$ in Substring $( x , \langle p o s _ { 1 } , p o s _ { 2 } \rangle ) ^ { \prime }$ , and $\langle \cdot \rangle$ is an abbreviation for std.Pair.