token=strtok (str,tok_delimiter)

len=strlen(str)        

partial_string=strsub(str,start_pos[,end_pos])

true_false=strcnt(str1,str2)

new_str=strstrip(str[,char])

tail=strend(str,count)

offset=strpos(str1,str2)

upper_str=strupr(str)

lower_str=strupr(str)

hi_same_low=strcmp(str1,str2)

index=strindex (str,str1[,str2[,str3...]])

selected_str=strselect (index,str1[,str2[,str3....])

new_string=strltrim(str[,char])

new_string=strrtrim(str[,char])

new_string=strrjust(str,char, tot_chars)

new_string=strljust(str,char, tot_chars)

char=itoc(ascii_val)

ascii_val=ctoi(char_str)

hex_val=itox(int_val)

value=xtoi(hex_str)

hexstr=strtohexi(string)

hexstr=inttohexi(unsigned_val,num_bytes)

hexstr=unstohexi(int_val,num_bytes)

string=hexitostr(hexi_str)

int_val=hexitoint(hexi_str,num_bytes)

unsigned=hexitoint(hexi_str,num_bytes)