what autotools calls CBUILD.
Its packages are contained in the root of the filesystem ("\fI/\fR").
If \fBROOT\fR is "\fI/\fR", all dependency types will be installed there.
-Otherwise, starting from experimental \fBEAPI 5-hdepend\fR, only \fBHDEPEND\fR
-is installed into "\fI/\fR".
-In \fBEAPI 5\fR and earlier, the behaviour is controlled by the
+Otherwise, for EAPIs that support \fBHDEPEND\fR (experimental
+\fBEAPI 5-hdepend\fR), only \fBHDEPEND\fR is installed into "\fI/\fR".
+For EAPIs that do not support \fBHDEPEND\fR, the behaviour is controlled by the
\fI\-\-root-deps\fR flag to \fBemerge\fR(1), defaulting to install only
\fBDEPEND\fR into the \fIhost\fR.
.TP
If it is different from "\fI/\fR", i.e. \fIhost\fR and \fItarget\fR are not the
same, this variable contains the path to the directory housing the \fItarget\fR
system.
-Starting from experimental \fBEAPI 5-hdepend\fR, \fBDEPEND\fR and \fBRDEPEND\fR
+For EAPIs that support \fBHDEPEND\fR (experimental \fBEAPI 5-hdepend\fR),
+\fBDEPEND\fR, \fBRDEPEND\fR, and \fBPDEPEND\fR
list the \fItarget\fR dependencies, i.e. those to be installed into \fBROOT\fR.
-In \fBEAPI 5\fR and earlier, the \fBemerge\fR(1) flag \fI\-\-root-deps\fR
-controlled what the package manager installed there, defaulting to only
-\fBRDEPEND\fR.
+For EAPIs that do not support \fBHDEPEND\fR, the \fBemerge\fR(1) flag
+\fI\-\-root-deps\fR controls what the package manager installs there.
.PP
See section \fBVARIABLES\fR for more information about the \fBDEPEND\fR,
\fBRDEPEND\fR and \fBHDEPEND\fR variables.
This option is only meaningful when used together with \fBROOT\fR and it should
not be enabled under normal circumstances!
-Affects \fBEAPI 5\fR and earlier ebuilds only.
-Experimental \fBEAPI 5-hdepend\fR and later provide \fBHDEPEND\fR as a new
+Does not affect EAPIs that support \fBHDEPEND\fR.
+Experimental \fBEAPI 5-hdepend\fR provides \fBHDEPEND\fR as a new
means to adjust installation into "\fI/\fR" and \fBROOT\fR.
-If \fBEAPI 5\fR and earlier ebuilds are built in the same \fBemerge\fR run as
-\fBEAPI 5-hdepend\fR and later ebuilds, this option affects only the former.
+If ebuilds using EAPIs which \fBdo not\fR support \fBHDEPEND\fR are built in
+the same \fBemerge\fR run as those using EAPIs which \fBdo\fR support
+\fBHDEPEND\fR, this option affects only the former.
.TP
.BR "\-\-select [ y | n ]"
Add specified packages to the world set (inverse of