-Time offset specification is used to add (or subtract) certain time
-interval to (from) the time reference moment. It consists of I<sign>
-(S<B<+> or B<->>) and I<amount>. The following time units can be used
-to specify the I<amount>: B<years>, B<months>, B<weeks>, B<days>,
-B<hours>, B<minutes>, B<seconds>, these can be used in singular
-or plural form, and abbreviated naturally or to a single letter
-(e.g. +3days, -1wk, -3y). Several time units can be combined
-together (e.g., -5mon1w2d), as well as several time offsets can be
-concatenated (e.g., -5h45min = -5h-45min = -6h+15min = -7h+1h30m-15min, etc.)
+The time offset specification is used to add/subtract certain time
+intervals to/from the time reference moment. It consists of a I<sign>
+(S<B<+> or B<->>) and an I<amount>. The following time units can be
+used to specify the I<amount>: B<years>, B<months>, B<weeks>, B<days>,
+B<hours>, B<minutes>, or B<seconds>. These units can be used in
+singular or plural form, and abbreviated naturally or to a single
+letter (e.g. +3days, -1wk, -3y). Several time units can be combined
+(e.g., -5mon1w2d) or concatenated (e.g., -5h45min = -5h-45min =
+-6h+15min = -7h+1h30m-15min, etc.)