en	label.invoice_calculator
el	Sum calculation

en	default
el	Default: one entry per time record

en	short
el	Hours: records summed up, one entry total

en	user
el	User: one entry per user

en	activity
el	Activity: one entry per activity

en	project
el	Project: one entry per project

en	date
el	Date: one entry per day (uses start date)

en	weekly
el	Weekly: one entry per week (uses start date)

en	price
el	Price: one entry per price