diff --git a/basis/compiler/cfg/instructions/instructions-docs.factor b/basis/compiler/cfg/instructions/instructions-docs.factor
index e9f88e8617..13fbff5451 100644
--- a/basis/compiler/cfg/instructions/instructions-docs.factor
+++ b/basis/compiler/cfg/instructions/instructions-docs.factor
@@ -137,5 +137,28 @@ HELP: ##copy
 HELP: ##compare-integer
 { $class-description "This instruction is emitted for integer comparisons." } ;
 
+HELP: ##spill
+{ $class-description "Instruction that copies a value from a register to a " { $link spill-slot } "." } ;
+
 HELP: gc-map-insn
 { $class-description "Union class of all instructions that contain subroutine calls to functions which allocate memory." } ;
+
+ARTICLE: "compiler.cfg.instructions" "Basic block instructions"
+"The " { $vocab-link "compiler.cfg.instructions" } " vocab contains all instruction classes used for generating CFG:s (Call Flow Graphs)."
+$nl
+"Instruction classes for moving values around:"
+{ $subsections
+  ##copy
+  ##reload
+  ##replace
+  ##spill
+}
+"Garbage collection words and instruction classes:"
+{ $subsections
+  gc-map-insn
+}
+"Alien calls:"
+{ $subsections
+  ##alien-invoke
+  alien-call-insn
+} ;
diff --git a/basis/compiler/cfg/linear-scan/live-intervals/live-intervals-docs.factor b/basis/compiler/cfg/linear-scan/live-intervals/live-intervals-docs.factor
new file mode 100644
index 0000000000..a479c315e1
--- /dev/null
+++ b/basis/compiler/cfg/linear-scan/live-intervals/live-intervals-docs.factor
@@ -0,0 +1,5 @@
+USING: help.markup help.syntax ;
+IN: compiler.cfg.linear-scan.live-intervals
+
+HELP: <live-interval>
+{ $description "Creates a new live interval for a virtual register. Initially the range is empty." } ;
diff --git a/basis/compiler/cfg/linear-scan/resolve/resolve-docs.factor b/basis/compiler/cfg/linear-scan/resolve/resolve-docs.factor
new file mode 100644
index 0000000000..624c13b039
--- /dev/null
+++ b/basis/compiler/cfg/linear-scan/resolve/resolve-docs.factor
@@ -0,0 +1,5 @@
+USING: help.markup help.syntax ;
+IN: compiler.cfg.linear-scan.resolve
+
+HELP: location
+{ $class-description "Represents an abstract location such as a cpu register or a spill slot." } ;
diff --git a/basis/compiler/cfg/stack-frame/stack-frame-docs.factor b/basis/compiler/cfg/stack-frame/stack-frame-docs.factor
new file mode 100644
index 0000000000..f284ce2b7c
--- /dev/null
+++ b/basis/compiler/cfg/stack-frame/stack-frame-docs.factor
@@ -0,0 +1,10 @@
+USING: help.markup help.syntax ;
+IN: compiler.cfg.stack-frame
+
+HELP: stack-frame
+{ $class-description "Counts of, among other things, how much stack a compiled word needs. It has the following slots:"
+  { $table
+    { { $slot "total-size" } { "Total size of the stack frame." } }
+    { { $slot "spill-area-size" } { "Number of bytes requires for all spill slots." } }
+  }
+} ;