\fIsatoshi\fR is the amount to be withdrawn from the internal wallet (expressed, as name suggests, in satoshi)\&. The string \fIall\fR can be used to specify withdrawal of all available funds\&. Otherwise, it is in satoshi precision; it can be a whole number, a whole number ending in \fIsat\fR, a whole number ending in \fI000msat\fR, or a number with 1 to 8 decimal places ending in \fIbtc\fR\&.
\fIfeerate\fR is an optional feerate to use\&. It can be one of the strings \fIurgent\fR (aim for next block), \fInormal\fR (next 4 blocks or so) or \fIslow\fR (next 100 blocks or so) to use lightningd\(cqs internal estimates: \fInormal\fR is the default\&.
Otherwise, \fIfeerate\fR is a number, with an optional suffix: \fIperkw\fR means the number is interpreted as satoshi\-per\-kilosipa (weight), and \fIperkb\fR means it is interpreted bitcoind\-style as satoshi\-per\-kilobyte\&. Omitting the suffix is equivalent to \fIperkb\fR\&.