The Sign if. codes as obtained by summary (lm) may be easily customized in R to use your own cut-off points, and symbols too. There are two elements to this, first the cut-off points for the p-values and the default settings are cutpoints = c(0, 0.001, 0.01, 0.05, 0.1, 1), and the second part has the symbols in symbols = c("***", "**", "*", ".", " "). Change these default settings to, say, symbols = c("$$$", "$$", "$", ".", " ") by first running fix(printCoefmat). Edit the printCoefmat and save it. The changes in this object are then applied in an R session by running the code assign In Names pace("printCoefmat", printCoefmat, "stats") at the console. Customize your Signif. codes and complete the program!