<ctfixed>
The ctfixed option indicates whether to create fixed record length files with c-tree file mode ctFIXED. If this option is set to yes, files with fixed record length are created with c-tree file mode ctFIXED. If this option is set to no, all files are created with c-tree file mode ctVLENGTH. This option is disabled by default.
Setting ctfixed to yes imposes a minimum record length of 9 bytes for huge files or 5 bytes for non-huge files (based on the setting of the 
<hugefile> configuration option).
Accepted Values
Value  | Effect  | Synonyms  | 
|---|
yes  | Fixed record length files are created with ctFIXED file mode.  | y, true, on, 1  | 
no  | All files are created with ctVLENGTH file mode. This is the default value.  | n, false, off, 0  | 
Example