Replacing Character and Gap

To replace a read symbol or gap in the Sanger Reads Editor, select the nucleotide and press Shift+R or use the Edit–>Replace character/gap context menu to switch the edit mode on.

While the selection is blinking, press the keyboard character that you want to use as a replacement.

After that, the edit mode is switched off. To replace another symbol, press Shift+R again.

You can always cancel the changes by pressing Ctrl+Z.