Source: FISAE techniques list

Intaglio

Original
C = intaglio printing (blank; embossing)
C1 = steel engraving
C2 = burin (graver or gouge) engraving, notably on copper
C3 = etching, including direct (brush) etching
C4 = dry point, including crayon manner and stipple engraving
C5 = aquatint
C6 = soft-ground or sugar etching
C7 = mezzotint
C8 = intaglio engraving on linoleum, plastic or other materials
Reproductive
P3 = photogravure, photogalvanography
P4 = commercial photogravure, rotogravure
P10 = etched steel printing (die-printing)

Relief

Original
X = relief printing (blank)
X1 = woodcut
X2 = wood engraving
X3 = linocut
X4 = relief-printed engraved or etched metal plates, notably metal cut
X5 = relief-printed metal plates created for intaglio printing
X6 = relief-printed engraving of other materials
X7 = (Chinese) stone stamp
Reproductive
T = typography, letterpress
T1 = linotype, indirect letterpress
T2 = photoxylography, facsimile wood engraving
T3 = commercial rubber stamp
P1 = line block (cliché) with or without photography
P2 = half-tone, photo zincography

Flatbed, stencil and electronic

Original
L1 = autolithography
L2 = autography (transfer lithography)
L3 = zincography
L4 = algraphy
P8 = original photograph, hologram
S = stencil, ‘pochoir’
S1 = original serigraphy (screenprinting)
S2 = mimeography (dye stencil)
S3 = Katazome (oiled-paper stencil)
S4 = Kappa (Katazome made with persimmon juice)
CGD = computer generated design
Reproductive
P = photographic reproduction
P5 = collotype
P6 = photolithography, process transfer lithography
P7 = offset
P9 = serigraphic reproduction (photosilkscreen)
CRD = computer reproduced design
Y = photocopy

Other abbreviations

U = technique not listed above, including Chinese rubbing and collography
/mon = monotype
/col. = hand coloured
Number preceding the technique = number of plates used
/number after the technique = number of colours used