two slashes before whatever you want to comment (//):
module: "calendar", // Built in
//position: "top_center", // Currently hidden
config: {
...
Or, simply don’t include the position item.
module: "calendar", // Built in
config: {
...
As a side note, if you want to comment out more than one line in the config, you can use the alternate syntax (/* comment */):
/* IRS Dropped {
url: "webcal://www.tax.gov/calendar/employer/calendar.ics",
name: "IRS",
symbol: "dollar-sign",
color: green,
}, */
this will work with any module.