Improve documentation.

Author: sletz

spats.lib

@@ -188,9 +188,9 @@ with {
 // * `xref`: x-coordinate of the reference listening point in meters
 // * `yref`: y-coordinate of the reference listening point in meters
 // * `zref`: z-coordinate of the reference listening point in meters
-// * `speakersDist`: distance between speakers in meters
-// * `nSources`: number of sound sources
-// * `nSpeakers`: number of speakers
+// * `speakersDist`: distance between speakers in meters (a constant numerical expression)
+// * `nSources`: number of sound sources (a constant numerical expression)
+// * `nSpeakers`: number of speakers (a constant numerical expression)
 // * `inProc`: per-source processor function, as a function of the source index
 // * `xs`: x-coordinate of the sound source in meters, as a function of the source index
 // * `ys`: y-coordinate of the sound source in meters, as a function of the source index
@@ -252,7 +252,7 @@ with {
 // #### Usage
 //
 // ```
-// wfs_ui(xref, yref, zref, speakersDist, nSources, nSpeaker) : si.bus(nSpeakers)
+// wfs_ui(xref, yref, zref, speakersDist, nSources, nSpeakers) : si.bus(nSpeakers)
 // ```
 //
 // Where:
@@ -261,8 +261,8 @@ with {
 // * `yref`: y-coordinate of the reference listening point in meters
 // * `zref`: z-coordinate of the reference listening point in meters
 // * `speakersDist`: distance between speakers in meters
-// * `nSources`: number of sound sources
-// * `nSpeakers`: number of speakers
+// * `nSources`: number of sound sources (a constant numerical expression)
+// * `nSpeakers`: number of speakers (a constant numerical expression)
 //
 // #### Test
 // ```