F1 Split Line
Splits the line where the cursor is located. The text from the cursor position to the right will be relocated to a newly inserted line.

From the Source-IV, version 8.9.1. Open this page in the PDF
Splits the line where the cursor is located. The text from the cursor position to the right will be relocated to a newly inserted line.

From the Source-IV, version 8.9.1. Open this page in the PDF