answer: A parameter file (.par) enables user to execute the underlying scripts without seeing the dreadful code, it stores the parameter values to avoid repeat entry as well. In addition, it can schedule repeated tasks.
2) question: In SAS, how do I define libname for current directory?
answer: For example, if the current dirctory is /Main/Users/guest, then:
libname mylib '.';
3) question: In R, how do I read from/write to files in the current directory?
answer: For example, if the current dirctory is /Main/Users/guest, then:
autos_data <- read.table("autos.dat", header=T, sep="\t")
or
png(filename="autos2.png", height=295, width=300, bg="white")
4) question: How do I create, share and delete a folder?
answer: Click the following icons to perform the task:
5) question: How do I create, edit, upload, set property and delete a file?
answer: Click the following icons to perform the task: 
