From a Wave, Inverted Line or other applicable formations.

Centers Step Ahead (1/2 Press Ahead) as Ends Fold.

A Wave ends in a Mini-Wave Box, an Inverted Line ends in Tandem Couples.

Step & Fold is a very important call, since it is used in the definitions of many other calls. Learn it well and be able to execute it precisely.

起始于 Wave:     Step & Fold 之前   之后	起始于 Inverted Line:     Step & Fold 之前   之后
起始于 Diamond:     Step & Fold 之前   之后

Step & Slide [A1] (Ed Fraidenburg 1967): From any Line of 4 or other applicable formations. Centers Step Ahead as Ends Slide together. A Line of 4 ends in a 2 x 2 or a "Z".

Grand Step & Fold [C1V]: From an applicable Line of 6 or 8 or other applicable formations. Very Ends Fold as the others Step Ahead. A Tidal Wave ends in Parallel 3 & 1 Lines.

Grand Step & Fold 之前   之后

Step & Cross Fold [C4]: From a Two-Faced Line or other applicable formations. Centers Step Ahead (Press Ahead) as Ends Cross Fold. A Two-Faced Line ends in a Mini-Wave Box.

Step & Cross Fold 之前   之后

Step & Cross Fold 之前   之后

参见 Step & Flip [C1] 并做 Step And anything [C2].