-export BP_PERL="$BP_DIR/code_perl" # Direcotry with Perl code.
-export BP_C="$BP_DIR/code_c" # Direcotry with c code.
-export BP_PYTHON="$BP_DIR/code_python" # Direcotry with Pyton code.
-export BP_RUBY="$BP_DIR/code_ruby" # Direcotry with Ruby code.
+export BP_PERL="$BP_DIR/code_perl" # Direcotory with Perl code.
+export BP_C="$BP_DIR/code_c" # Direcotory with C code.
+export BP_PYTHON="$BP_DIR/code_python" # Direcotory with Pyton code.
+export BP_RUBY="$BP_DIR/code_ruby" # Direcotory with Ruby code.
+
+### This is the directory with the document root fro the Biopieces Genome Browser:
+
+export BP_WWW="$BP_DIR/www" # Direcotory with Biopieces Genome Browser.