deformer -type wrapX driven;
connectAttr -f driverShape.outMesh wrapX1.inMesh;
connectAttr -f preShape.outMesh wrapX1.preMesh;

• in relative mode(absolute=off) it can be used to transfer facial expressions from one character to another.
• in absolute mode(absolute=on) it tries to imitate the shape of the driving geometry.
• same Topo mode can be used, if both geometries have the same topology, but are shaped differently. In that case the point numberings are directly mapped to each other and it's not uv-based. It's also for transferring facials because only offsets are transferred - absolute=off.
  (absolute=on makes no sense in that case, because it would have just the same effect as outMesh->inMesh)

deformer -type uvBlendShape driven;
connectAttr -f driverShape.outMesh uvBlendShape1.inMesh;
connectAttr -f preShape.outMesh uvBlendShape1.preMesh;

• select -r sculpt ;
• select -add skinned ;
• select -addFirst skinCluster1 ;
• execute command

• select reference Mesh (should be symmetrical)
• shift select target Mesh
• execute Command
• tolerance is the tolerance used to find symmetrical point pairs
  (0.01 should be a good starting point)
• mirrorInverse (-i) is either 0 (-X to +X) or 1 (+X to -X), default is 0
  This Flag lets you specify the direction of the mirroring
• mode is either 0 (mirror) or 1 (reflect)

no Flags means tolerance of 0.01 and mirror mode and -X to +X

• round rounds the inputValue to the given number of digits
• display either text or value or both or none
• variable display color
• text is left aligned unlike text in the annotation node

Works now also on vertex-selection. Means you can export/import only a certain area of your character. When you import, it imports only the vertices, that you previously saved to the file.

• select the Mesh or Vertices
• select skinCluster in channelBox
• type skinWeightsIO -path -mode 0 (0 is write, 1 for read)

Or source skinWeightsIOUI.mel and type skinWeightsIOUI.

It reads the weights by name, not by index.
That means, the order, in which the influences are bound before importing, can differ from the one before exporting.
That means you exoprt, detach, change joint-hierarchy, import again, still working. that way you can also swap weights: export, change joint-names, import, change joint-names again, done!

skinWeightsIO is being used by LUMA PICTURES

• select vertices you want to be moved
• ctrl-select the object from which you want to copy the vertex position in the outliner
• type transferVertices -m 1
  (the m-parameter determines how much you want make the vertices go in the desired direction (e.g. -m 0.5 makes them go only halfway)
• type just transferVertices and m will be 1 (default)

Example (setup the scene, two spheres with same topology, one is deformed):

$src = `polySphere -r 1 -sx 100 -sy 100 -ax 0 1 0 -cuv 2 -ch 1`;
$dest = `duplicate -rr $src[0]`;
move -r -os -wd 5 0 0 $dest[0];
setAttr ($src[0] + ".scaleY") 3;
makeIdentity -apply true -t 0 -r 0 -s 1 -n 0 $src[0];
select -r ($dest[0] + ".vtx[0:3000]");
select -tgl $src[0];

• unpack rar-file
• copy motionEqualizerUI.mel to your scripts-directory
• copy motionEqualizer.mll to your plugIn-directory
• restart maya
• open walk.ma
• type motionEqualizerUI
• select one or more Objects, that has animation on it (i.e. LThigh10)
• select the attributes, you want to have affected in the channelBox
  (i.e. rx, ry, rz)
• adjust the equalizer-slider-values
• press process