# Split at Isocurve

[Split at Isocurve] command splits a surface at its isoparameteric line.

## Step 1

For the prompt "Specify Surface", select a surface to split.

## Step 2

For the prompt "Locate the position to split", locate a position on the surface by mouse cursor. To finish the locating, press `Enter` key, and the command is terminated.

- Pressing `B` key, isocurves of both u and v direction will be extracted to split.

- Pressing `T` key, the parameter kind u or v will be toggled.

- Pressing `U` key, isocurve will be U=const parameter line.

- Pressing `V` key, isocurve will be V=const parameter line.