The WebUI's Editor page allows editing Allsky configuration files. Items in the editor window are color-coded depending on what they are.

HINT: The Editor accepts CTRL-Z to undo actions.

A typical view of a JSON file being edited is below, followed by a description of the color scheme.

.json file

Color scheme

Problems in the file

If there's a formatting error in the file a small red "x" will appear to the left of a the line number. Hover your cursor over it to see the error.
In the example below, a comma is missing from the end of line 37. The message is somewhat cryptic but is telling you it was expecting to see one of the listed characters at the end of the line.

Error in file

You will not be able to save the file until all errors are resolved.

If the page doesn't indicate there's an error but you get an error when you try to view the page, check if the colors on the page are different than what was described above. The most common errors are below: