diff --git a/alliance/share/man/man5/spi.5 b/alliance/share/man/man5/spi.5
index 37eb9033..e015b39a 100644
--- a/alliance/share/man/man5/spi.5
+++ b/alliance/share/man/man5/spi.5
@@ -42,7 +42,7 @@ No particular information is needed to build a \fILOFIG\fP from a \fB.SUBCKT\fP,
 
 .SH DRIVER
 
-The driver creates a Spice netlist of the \fILOFIG\fP passed as a parameter.  The file contain a single \fB.SUBCKT\fP representing the figure and commands \fB.INCLUDE\fP with name of instances contained in the \fILOFIG\fP.  Nodes are number named with the directive \fB* NET\fP. A comment at the beginning of the file represents the interface of the \fILOFIG\fP. This comment is not used by the parser.
+The driver creates a Spice netlist of the \fILOFIG\fP passed as a parameter.  The file contain a single \fB.SUBCKT\fP representing the figure and commands \fB.INCLUDE\fP with name of instances contained in the \fILOFIG\fP.  Nodes are number named with the directive \fB* NET\fP, or strings, depending on \fIMBK_SPI_NAMEDNODES\fP. A comment at the beginning of the file represents the interface of the \fILOFIG\fP. This comment is not used by the parser.
 
 Environment variable considered are
 
@@ -51,6 +51,7 @@ Environment variable considered are
 
 .B MBK_SPI_NETNAME
 
+.B MBK_SPI_NAMEDNODES
 .RE
 
 .SH PARSER
@@ -128,6 +129,22 @@ If this variable is set, an RCN view is not created for a net containing only on
 
 Default behaviour of Spice parser is to display an error message when an unknown element is read in the input file. Setting this variable prevent this display. Usefull when file contain command for Spice simulator.
 
+.B MBK_SPI_NAMEDNODES
+
+When this environment variable is set, spice netlist's nodes are named using one of the following convention, if signal name is set or no, or if signal has an RCN view :
+
+.RS
+"SIGNAL NAME" $MBK_SEPAR "RCN NODE"
+
+"SIGNAL NAME"
+
+SIG "SIGNAL INDEX" $MBK_SEPAR "RCN NODE"
+
+SIG "SIGNAL INDEX"
+.RE
+
+$MBK_SEPAR is a single character defined by a environment variable with the same name.
+
 .SH EXAMPLE
 
 This is an example of a file generated by the Spice driver.
@@ -171,7 +188,7 @@ This is an example of a file generated by the Spice driver.
 
 .SH SEE ALSO
 
-.B Alliance(1) MBK(1) Al(1) RCN(1)
+.B Alliance(1) MBK(1) Al(1) RCN(1) MBK_SEPAR(1)
 
 .SH AUTHOR