diff --git a/Operand.cpp b/Operand.cpp
index ca823de..76e9bbf 100644
--- a/Operand.cpp
+++ b/Operand.cpp
@@ -70,7 +70,8 @@ namespace jet {
 	 unsigned int seed = (unsigned int)clock();
 	 doubleValue = (double) rand_r(&seed) / (RAND_MAX + 1.0);
 	 isNumber = true;
-	 string = std::format("{}", doubleValue);	 
+	 string = std::format("{:.12f}", doubleValue);
+	 string.removeTrailingZeros();
       } else if(in.ifNext("true")) {
 	 boolean = true;
 	 string = "true";
@@ -79,7 +80,7 @@ namespace jet {
 	 string = "false";
       } else if(in.startsWithNumber()) {
 	 doubleValue = in.asDouble();
-	 string = std::format("{}", doubleValue);
+	 string = std::format("{:.12f}", doubleValue);
 	 isNumber = true;
       } else if(in.ifNext("'")) {
 	 string = in.getTokenExclude("'");
@@ -116,6 +117,7 @@ namespace jet {
       if(in.ifNext("<")) {
 	 Operand op(in);
 	 if(isNumber && op.isNumber) {
+	    std::cout << doubleValue << " < " << op.doubleValue << std::endl;
 	    if(doubleValue < op.doubleValue) {
 	       boolean = true;
 	       isNumber = false;
@@ -238,7 +240,8 @@ namespace jet {
 	    Operand op(in);
 	    if(op.isNumber) {
 	       doubleValue += op.doubleValue;
-	       string = std::format("{}", doubleValue);	       
+	       string = std::format("{:.12f}", doubleValue);	       
+	       string.removeTrailingZeros();
 	    } else
 	      throw coreutils::Exception("operand is not a number.");
 	 } else
@@ -248,7 +251,8 @@ namespace jet {
 	    Operand op(in);
 	    if(op.isNumber) {
 	       doubleValue -= op.doubleValue;
-	       string = std::format("{}", doubleValue);	       
+	       string = std::format("{:.12f}", doubleValue);	       
+	       string.removeTrailingZeros();
 	    } else
 	      throw coreutils::Exception("operand is not a number.");
 	 } else
@@ -258,7 +262,8 @@ namespace jet {
 	    Operand op(in);
 	    if(op.isNumber) {
 	       doubleValue *= op.doubleValue;
-	       string = std::format("{}", doubleValue);	       
+	       string = std::format("{:.12f}", doubleValue);	       
+	       string.removeTrailingZeros();
 	    } else
 	      throw coreutils::Exception("operand is not a number.");
 	 } else
@@ -268,7 +273,8 @@ namespace jet {
 	    Operand op(in);
 	    if(op.isNumber) {
 	       doubleValue /= op.doubleValue;
-	       string = std::format("{}", doubleValue);	       
+	       string = std::format("{:.12f}", doubleValue);	       
+	       string.removeTrailingZeros();
 	    } else
 	      throw coreutils::Exception("operand is not a number.");
 	 } else
diff --git a/Tag.cpp b/Tag.cpp
index 73a1f21..bb5c413 100644
--- a/Tag.cpp
+++ b/Tag.cpp
@@ -34,7 +34,6 @@ namespace jet {
 	if(in.ifNext("<")) {
 	   name = in.getTokenInclude("ABCDEFGHIJKLMNOPQRSTUVWXYZabcdefghijklmnopqrstuvwxyz0123456789-_!");
 	   if(in.startsWith(" ") || in.startsWith("/") || in.startsWith(">")) {
-	      coreutils::Log(coreutils::LOG_DEBUG_1) << "Processing tag: " << name;
 	      bool finished = false;
 	      while(!finished) {
 		 in.skipWhitespace();
diff --git a/__while.cpp b/__while.cpp
index ea7e16b..b0ef60d 100644
--- a/__while.cpp
+++ b/__while.cpp
@@ -9,24 +9,17 @@ namespace jet {
 
       coreutils::MString result;
       bool booleanResult = false;
+      bool exprMethod = false;
       
       if(variableDefined("value1")) {
-	   
+	 
 	 if(variableDefined("expr"))
-	   throw coreutils::Exception("Either value1 or expr can be specified but not both.");
-	 if(variableDefined("value2")) {
-	      
-	    if(variableDefined("type")) {
-	       
-
-	    }
-	    else
-	      throw coreutils::Exception("type expected if value1 and value2 specified.");
-	 }
-	 else
+	   throw coreutils::Exception("either value1 or expr can be specified but not both.");
+	 if(!variableDefined("value2")) 
 	   throw coreutils::Exception("value2 required if value1 specified.");
-	 if(!variableDefined("type"))
-	   throw coreutils::Exception("type required for a value1 and value2 comparison.");
+	 if(!variableDefined("type")) 
+	   throw coreutils::Exception("type expected if value1 and value2 specified.");
+	 
 	 int rc = variables["value1"].compare(variables["value2"]);
 	 if(((variables["type"] == "eq") && (rc == 0)) ||
 	    ((variables["type"] == "ne") && (rc != 0)) ||
@@ -39,19 +32,33 @@ namespace jet {
 	   throw coreutils::Exception("type value must be 'eq','ne','lt','le','gt','ge'.");
       }
       else if(variableDefined("expr")) {
-	 
 	 if(variableDefined("value2"))
 	   throw coreutils::Exception("value2 should not be specified with expr.");
 	 if(variableDefined("type"))
 	   throw coreutils::Exception("type should not be specified with expr.");
+	 exprMethod = true;
 	 booleanResult = Operand(variables["expr"]).boolean;
       }
       
       while(booleanResult) {	   
 	 processContainer(container);
 	 container.reset();
+	 if(exprMethod) {	      
+	   variables["expr"].reset();
+	   booleanResult = Operand(variables["expr"]).boolean;
+	 } else {
+	    booleanResult = false;
+	    int rc = variables["value1"].compare(variables["value2"]);
+	    if(((variables["type"] == "eq") && (rc == 0)) ||
+	       ((variables["type"] == "ne") && (rc != 0)) ||
+	       ((variables["type"] == "lt") && (rc == -1)) ||
+	       ((variables["type"] == "le") && (rc != 1)) ||
+	       ((variables["type"] == "gt") && (rc == 1)) ||
+	       ((variables["type"] == "ge") && (rc != -1)))
+	      booleanResult = true;  
+	 }	 
       }
-         
+      
    }
    
 }
diff --git a/tests/testfor.jet b/tests/testfor.jet
index d075685..825c7af 100755
--- a/tests/testfor.jet
+++ b/tests/testfor.jet
@@ -1,6 +1,6 @@
-#!./jet-2.0
+#!../jet-2.0
 <jet cgi="true" name1="localname" filterblanklines="true" trimlines="true">
- <for name="ix" start="1" end="5" step="1">
+ <for name="ix" start="1" end="5" step=".1">
   -->#[ix]<--
  </for>
 </jet>
diff --git a/tests/testwhile.jet b/tests/testwhile.jet
new file mode 100755
index 0000000..9d99ce2
--- /dev/null
+++ b/tests/testwhile.jet
@@ -0,0 +1,9 @@
+#!../jet-2.0
+<jet cgi="false" name1="localname" filterblanklines="true" trimlines="true">
+ <set name="ix" value="1" />
+ <while expr="$[ix]<10">
+  <set name="check" expr="$[ix]<10" />
+  -->$[check]-$[ix]<--
+  <set name="ix" expr="$[ix]+1" />
+ </while>
+</jet>