Transmit includes a basic text editor for small modifications to plain text files.
To edit a text file within Transmit, select it, then choose File > Edit in TransmitTo save changes made in the editor, choose File > SaveChoose Transmit > Preferences
Click Files
In the Custom Editors section, click +
Type the extension for the file type, such as "html" or "txt"
Click Choose... to associate the file type with an application
Click OK
To delete a custom editor configuration, select it, then click -
To edit an existing custom editor configuration, select it then click