diff --git a/lib/ui.js b/lib/ui.js
index 250daab..c12d14c 100644
--- a/lib/ui.js
+++ b/lib/ui.js
@@ -1,34 +1,33 @@
 const clipboardy = require('clipboardy');
 const opn = require('opn');
-// const os = require('os');
+const os = require('os');
 const path = require('path');
-// const pathExists = require('path-exists');
+const pathExists = require('path-exists');
 const rename = require('../rename');
 const term = require('terminal-kit').terminal;
-// const traverse = require('traverse');
+const traverse = require('traverse');
 const yargs = require('yargs');
 const yargsOptions = require('./yargsOptions');
 
-// const defaultData = require('../lib/data');
-// let userData;
-// if (pathExists.sync(os.homedir() + '/.rename/userData.js')) {
-//   userData = require(os.homedir() + '/.rename/userData.js');
-// } else {
-//   userData = function() { return {}; };
-// }
-// let fo = path.parse(__filename);
-// let defaultVars = defaultData(fo);
-// let userVars = userData(fo);
-// let allData = Object.assign(defaultVars, userVars);
-// console.dir(allData);
-// let variableNames = traverse.paths(allData).map(p => {
-//   console.dir(p);
-//   if (p.length === 1 && typeof allData[p[0]] !== "object") {
-//     return p[0];
-//   } else if (p.length > 1) {
-//     return p.join('.');
-//   }
-// }).filter(p => p !== undefined);
+const defaultData = require('../lib/data');
+let userData;
+if (pathExists.sync(os.homedir() + '/.rename/userData.js')) {
+  userData = require(os.homedir() + '/.rename/userData.js');
+} else {
+  userData = function() { return {}; };
+}
+let fo = path.parse(__filename);
+let defaultVars = defaultData(fo);
+let userVars = userData(fo);
+let allData = Object.assign(defaultVars, userVars);
+let variableNames = traverse.paths(allData).map(p => {
+  console.dir(p);
+  if (p.length === 1 && typeof allData[p[0]] !== "object") {
+    return p[0];
+  } else if (p.length > 1) {
+    return p.join('.');
+  }
+}).filter(p => p !== undefined);
 
 let TIMEOUT;
 let REFRESH = true;
@@ -58,11 +57,7 @@ term.on('key', function (name, matches, data) {
 
 term.fullscreen(true);
 term('rename ');
-term.saveCursor();
-let helpText = 'Rename-CLI v' + require('../package.json').version + '    Type CTRL-H to view online help';
-let helpTextX = (term.width / 2) - (helpText.length / 2);
-term.moveTo(helpTextX, term.height, helpText);
-term.restoreCursor();
+setHelpText();
 
 let inputField = term.inputField({cancelable: true},
   function (error, input) {
@@ -77,6 +72,13 @@ let inputField = term.inputField({cancelable: true},
 );
 
 function updateCommands() {
+  let variableMatch = inputField.getInput().match('{{\\s*([A-z.]*)$');
+  if (variableMatch) {
+    let matchingVars = variableNames.filter(v => v.startsWith(variableMatch[1])).join(', ');
+    setHelpText('Variables: ' + matchingVars);
+  } else {
+    setHelpText();
+  }
   term.saveCursor();
   term.eraseArea(1, 2, term.width, term.height - 2);
   term.moveTo(1, 3, 'working...');
@@ -136,3 +138,17 @@ function inputSubmitted(input) {
     }
   });
 }
+
+function setHelpText(helpText, center) {
+  if (helpText === undefined) {
+    helpText = 'Rename-CLI v' + require('../package.json').version + '    Type CTRL-H to view online help';
+    center = true;
+  }
+  term.saveCursor();
+  let helpTextX;
+  if (center && helpText.length < term.width) helpTextX = (term.width / 2) - (helpText.length / 2);
+  else helpTextX = 1;
+  helpText = truncate(helpText);
+  term.moveTo(helpTextX, term.height).eraseLine().moveTo(helpTextX, term.height, helpText);
+  term.restoreCursor();
+}
diff --git a/lib/yargsOptions.js b/lib/yargsOptions.js
index 385a9d2..5213983 100644
--- a/lib/yargsOptions.js
+++ b/lib/yargsOptions.js
@@ -50,6 +50,10 @@ module.exports = {
     boolean: true,
     describe: 'Do not rename directories',
     showInUi: true
+  }, 'sort': {
+    boolean: false,
+    describe: 'Sort files before renaming. Parameter: alphabet (default), date-create (most recent first), date-modified (most recent first), size (biggest first). Include the word reverse before or after to reverse the order.',
+    showInUi: true
   }, 'p': {
     alias: 'prompt',
     boolean: true,
diff --git a/rename.js b/rename.js
index 948c386..f1d7453 100644
--- a/rename.js
+++ b/rename.js
@@ -67,9 +67,21 @@ function getOperations(files, newFileName, options) {
     fileObj.options = options;
     fileObj = replaceVariables(fileObj);
     if (!options.noTrim) fileObj.newName = fileObj.newName.trim();
+
+    let stats = fs.statSync(fullPath, true);
+    fileObj.size = stats.size;
+    fileObj.dateCreate = stats.birthtimeMs;
+    fileObj.dateModify = stats.mtimeMs;
     return fileObj;
   }).filter(f => f !== undefined);
 
+  if (options.sort) {
+    if (options.sort.includes('date-create')) fileObjects = fileObjects.sort((a,b) => { return b.dateCreate - a.dateCreate; });
+    else if (options.sort.includes('date-modify')) fileObjects = fileObjects.sort((a,b) => { return b.dateModify - a.dateModify; });
+    else if (options.sort.includes('size')) fileObjects = fileObjects.sort((a,b) => { return b.size - a.size; });
+    if (options.sort.includes('reverse')) fileObjects.reverse();
+  }
+
   // Add indices
   if (!options.noIndex) {
     let counts = {};
@@ -152,7 +164,8 @@ function argvToOptions(argv) {
     noMove: (argv.nomove ? true : false),
     createDirs: (argv.createdirs ? true : false),
     noExt: (argv.noext ? true : false),
-    noUndo: (argv.noundo ? true : false)
+    noUndo: (argv.noundo ? true : false),
+    sort: (argv.sort ? argv.sort : false)
   };
   if (options.noMove && options.createDirs) options.createDirs = false;
   return options;