diff --git a/src/xschemrc b/src/xschemrc
index 80ff4822..36618b3d 100644
--- a/src/xschemrc
+++ b/src/xschemrc
@@ -83,6 +83,19 @@
 #### If unset $USER_CONF_DIR/simulations is assumed (normally ~/.xschem/simulations) 
 # set netlist_dir $env(HOME)/.xschem/simulations
 
+###########################################################################
+#### NETLIST AND HIERARCHICAL PRINT EXCLUDE PATTERNS
+###########################################################################
+#### xschem_libs is a list of patterns of cells to exclude from netlisting.
+#### Matching is done as regular expression on full cell path
+#### Example:
+#### set xschem_libs { {/cmoslib/} {/analoglib/.*pass} buffer }
+#### in this case all schematic cells of directory cmoslib and cells containing
+#### /analoglib/...pass and buffer will be excluded from netlisting
+set xschem_libs {}
+#### noprint_libs is a list with same rules as for xschem_libs. This
+#### variable controls hierarchical print
+set noprint_libs {}
 ###########################################################################
 #### CHANGE DEFAULT [] WITH SOME OTHER CHARACTERS FOR BUSSED SIGNALS 
 #### IN SPICE NETLISTS (EXAMPLE: DATA[7] --> DATA<7>)