Sextile
In plain words
Two planets a sixth of the way round from each other. A door held open — helpful, but only if you walk through it.
In the tradition's terms
60° apart, in compatible elements: an opportunity that requires deliberate action to come to anything.
In depth
Separation 60°. Half a trine, and read as the aspect of opportunity rather than of gift: it is said to require the native's consent.