Sony BZDM-7020 User Manual page 175

Selecting the wave mode – F2 (MODE)
Press F2 (MODE), to select "H & V", "SLANT" or "SIZE".
"H & V": The wavy effect is applied either horizontally or
vertically or both simultaneously.
"SLANT": The wavy effect is applied in a specified direction.
In this case it can only be applied in one direction at a time.
"SIZE": The size is modulated in an arbitrary direction. This
effect creates waves in one direction only.
Before modulation
H & V, SLANT
SIZE
Chapter 5 Special Effects Operations
5-91