Index: doc/user/09_appendix/bridges.svg
===================================================================
--- doc/user/09_appendix/bridges.svg	(revision 35712)
+++ doc/user/09_appendix/bridges.svg	(revision 35713)
@@ -81,7 +81,7 @@
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+	<text fill="#000000" text-anchor="middle" x="56" y="864" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">BXL</tspan></text>
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@@ -140,7 +140,6 @@
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 	<text fill="#000000" text-anchor="middle" x="144" y="612" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">import</tspan><tspan x="144" dy="1em">PCB</tspan></text>
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@@ -147,11 +146,11 @@
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+	<text fill="#000000" text-anchor="middle" x="1360" y="684" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">TCP/IP</tspan></text>
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+	<line  marker-end="url(#ahe)"  x1="96" y1="864" x2="192" y2="864" stroke="#000000"/>
+	<text fill="#000000" text-anchor="middle" x="144" y="864" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">import</tspan><tspan x="144" dy="1em">footprint</tspan></text>
+	<line  marker-end="url(#ahe)" marker-start="url(#ahs)"  x1="547.2" y1="50.4" x2="547.2" y2="165.6" stroke="#000000"/>
+	<g transform="rotate(-90 547.2 108)">
+	<text fill="#000000" text-anchor="middle" x="547.2" y="108" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">footprint</tspan></text>
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+	<line  marker-end="url(#ahe)" marker-start="url(#ahs)"  x1="832" y1="50.4" x2="832" y2="165.6" stroke="#000000"/>
+	<g transform="rotate(-90 832 108)">
+	<text fill="#000000" text-anchor="middle" x="832" y="108" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">schematics</tspan></text>
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-	<text fill="#000000" text-anchor="middle" x="272" y="108" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">board</tspan><tspan x="272" dy="1em">legacy</tspan></text>
+	<line  marker-end="url(#ahe)" marker-start="url(#ahs)"  x1="233.6" y1="50.4" x2="233.6" y2="165.6" stroke="#000000"/>
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+	<text fill="#000000" text-anchor="middle" x="233.6" y="108" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">board</tspan><tspan x="233.6" dy="1em">s-expr</tspan></text>
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@@ -215,27 +214,47 @@
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-	<text fill="#000000" text-anchor="middle" x="547.2" y="108" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">footprint</tspan></text>
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+	<text fill="#000000" text-anchor="middle" x="508.8" y="108" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">board</tspan></text>
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+	<text fill="#000000" text-anchor="middle" x="357.6" y="126" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">netlist</tspan></text>
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+	<line  marker-end="url(#ahe)"  x1="96" y1="324" x2="192" y2="324" stroke="#000000"/>
+	<text fill="#000000" text-anchor="middle" x="144" y="324" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">import</tspan><tspan x="144" dy="1em">schematics</tspan></text>
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+	<text fill="#000000" text-anchor="middle" x="465.6" y="126" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">DRC</tspan><tspan x="465.6" dy="1em">spec</tspan></text>
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+	<text fill="#000000" text-anchor="middle" x="144" y="360" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">import</tspan><tspan x="144" dy="1em">schematics</tspan></text>
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+	<text fill="#000000" text-anchor="middle" x="144" y="288" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">import</tspan><tspan x="144" dy="1em">schematics</tspan></text>
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-	<text fill="#000000" text-anchor="middle" x="357.6" y="126" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">netlist</tspan></text>
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+	<text fill="#000000" text-anchor="middle" x="144" y="396" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">import</tspan><tspan x="144" dy="1em">netlist</tspan></text>
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-	<text fill="#000000" text-anchor="middle" x="144" y="396" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">import</tspan><tspan x="144" dy="1em">netlist</tspan></text>
+	<line  marker-end="url(#ahe)"  x1="96" y1="432" x2="192" y2="432" stroke="#000000"/>
+	<text fill="#000000" text-anchor="middle" x="144" y="432" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">netlist</tspan><tspan x="144" dy="1em">pads/subcs</tspan></text>
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@@ -274,21 +287,10 @@
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 	<text fill="#000000" text-anchor="middle" x="1036.8" y="126" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">DRU</tspan></text>
 	</g>
-	<line  marker-end="url(#ahe)" marker-start="url(#ahs)"  x1="896" y1="86.4" x2="896" y2="165.6" stroke="#000000"/>
-	<g transform="rotate(-90 896 126)">
-	<text fill="#000000" text-anchor="middle" x="896" y="126" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">board</tspan></text>
-	</g>
-	<line  marker-end="url(#ahe)"  x1="96" y1="432" x2="192" y2="432" stroke="#000000"/>
-	<text fill="#000000" text-anchor="middle" x="144" y="432" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">netlist</tspan><tspan x="144" dy="1em">pads/subcs</tspan></text>
 	<line  marker-end="url(#ahe)" marker-start="url(#ahs)"  x1="1136" y1="86.4" x2="1136" y2="165.6" stroke="#000000"/>
 	<g transform="rotate(-90 1136 126)">
 	<text fill="#000000" text-anchor="middle" x="1136" y="126" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">board</tspan></text>
 	</g>
-	<line  marker-end="url(#ahe)" marker-start="url(#ahs)"  x1="968" y1="50.4" x2="968" y2="165.6" stroke="#000000"/>
-	<g transform="rotate(-90 968 108)">
-	<text fill="#000000" text-anchor="middle" x="968" y="108" font-family="Times,serif" font-size="14.00"><tspan dy="-0.2em">board</tspan></text>
-	</g>
 	<line  marker-end="url(#ahe)" marker-start="url(#ahs)"  x1="1216" y1="180" x2="1312" y2="180" stroke="#000000"/>
-	<line  marker-end="url(#ahe)" marker-start="url(#ahs)"  x1="1216" y1="252" x2="1312" y2="252" stroke="#000000"/>
 </g>
 </svg>
Index: doc/user/09_appendix/src/bridges.txt
===================================================================
--- doc/user/09_appendix/src/bridges.txt	(revision 35712)
+++ doc/user/09_appendix/src/bridges.txt	(revision 35713)
@@ -117,7 +117,7 @@
 	label Mentor grp.\n(netlist)
 
 [bxl]
-	label BXL\n(footprint)
+	label BXL
 
 [easy]
 	label EasyEDA\n(web2.0)
@@ -332,9 +332,12 @@
 -> msch.e pcbrnd
 	label import\nnetlist
 
+-> bxl.e pcbrnd
+	label import\nfootprint
 
 
 
+
 <-> hyp_.s pcbrnd
 	label board