diff --git a/src/adjmat/DumpGraph.cpp b/src/adjmat/DumpGraph.cpp
index 2d364176bf4d74492ee6934b687dbcc87ec496dc..971cb91e28e07a7709b919b0811ab871193310d3 100644
--- a/src/adjmat/DumpGraph.cpp
+++ b/src/adjmat/DumpGraph.cpp
@@ -30,6 +30,16 @@
 namespace PLMD {
 namespace adjmat {
 
+//+PLUMEDOC CONCOMP DUMPGRAPH
+/*
+Write out the connnectivity of the nodes in the graph in dot format.
+
+\par Examples
+
+*/
+//+ENDPLUMEDOC
+
+
 class DumpGraph : public ActionPilot {
 private:
 ///
diff --git a/src/adjmat/TopologyMatrix.cpp b/src/adjmat/TopologyMatrix.cpp
index 96071c4ac9be075c861d4bd68ad439d5838e0d10..68f208bd4bbb464a60da5237198017fb992c6ddd 100644
--- a/src/adjmat/TopologyMatrix.cpp
+++ b/src/adjmat/TopologyMatrix.cpp
@@ -26,6 +26,14 @@
 #include "tools/HistogramBead.h"
 #include "tools/Matrix.h"
 
+//+PLUMEDOC MATRIX TOPOLOGY_MATRIX
+/*
+Adjacency matrix in which two atoms are adjacent if they are connected topologically
+
+\par Examples
+
+*/
+//+ENDPLUMEDOC
 
 namespace PLMD {
 namespace adjmat {
diff --git a/src/gridtools/IntegrateGrid.cpp b/src/gridtools/IntegrateGrid.cpp
index 11538cc3abb2878b94e3f1c71a03a78e7ef6e530..d5eac3f0f2173802bf21c74ceb47ecd89b45510d 100644
--- a/src/gridtools/IntegrateGrid.cpp
+++ b/src/gridtools/IntegrateGrid.cpp
@@ -22,6 +22,15 @@
 #include "core/ActionRegister.h"
 #include "ActionWithIntegral.h"
 
+//+PLUMEDOC GRIDANALYSIS INTEGRATE_GRID
+/*
+Calculate the total integral of the function on the input grid
+
+\par Examples
+
+*/
+//+ENDPLUMEDOC
+
 namespace PLMD {
 namespace gridtools {