Hatchings are distinctive and systematic patterns of lines and dots used for designating heraldic tinctures or other colours on uncoloured surfaces, such as woodcuts or engravings, seals and coins. Several systems of hatchings were developed during the Renaissance as an alternative to tricking, the earlier method of indicating heraldic tinctures by use of written abbreviations. The present day hatching system was developed during the 1630s by Silvester Petra Sancta and Marcus Vulson de la Colombière. Some earlier hatching methods were also developed, but did not come into wide use.