diff --git a/R/burgled.R b/R/burgled.R
new file mode 100644
index 0000000..3586fde
--- /dev/null
+++ b/R/burgled.R
@@ -0,0 +1,106 @@
+
+# Mixed ordering ------------------------------------------------------------------------------
+
+#' @source gtools::mixedsort
+#' @noRd
+#' @keywords internal 
+mixedsort = function (x, decreasing = FALSE, na.last = TRUE, blank.last = FALSE, 
+                      roman.case = c("upper", "lower", "both"), scientific = TRUE) {
+  ord <- mixedorder(x, decreasing = decreasing, na.last = na.last, 
+                    blank.last = blank.last, roman.case = roman.case, scientific = scientific)
+  x[ord]
+}
+
+#' @source gtools::mixedorder
+#' @noRd
+#' @keywords internal
+mixedorder = function (x, decreasing = FALSE, na.last = TRUE, blank.last = FALSE, 
+          numeric.type = c("decimal", "roman"), roman.case = c("upper", "lower", "both"), 
+          scientific = TRUE) 
+{
+  numeric.type <- match.arg(numeric.type)
+  roman.case <- match.arg(roman.case)
+  if (length(x) < 1) {
+    return(NULL)
+  }
+  else if (length(x) == 1) {
+    return(1)
+  }
+  if (!is.character(x)) {
+    return(order(x, decreasing = decreasing, na.last = na.last))
+  }
+  delim <- "\\$\\@\\$"
+  if (numeric.type == "decimal") {
+    if (scientific) {
+      regex <- "((?:(?i)(?:[-+]?)(?:(?=[.]?[0123456789])(?:[0123456789]*)(?:(?:[.])(?:[0123456789]{0,}))?)(?:(?:[eE])(?:(?:[-+]?)(?:[0123456789]+))|)))"
+    }
+    else {
+      regex <- "((?:(?i)(?:[-+]?)(?:(?=[.]?[0123456789])(?:[0123456789]*)(?:(?:[.])(?:[0123456789]{0,}))?)))"
+    }
+    numeric <- function(x) as.numeric(x)
+  }
+  else if (numeric.type == "roman") {
+    regex <- switch(roman.case, both = "([IVXCLDMivxcldm]+)", 
+                    upper = "([IVXCLDM]+)", lower = "([ivxcldm]+)")
+    numeric <- function(x) roman2int(x)
+  }
+  else {
+    stop("Unknown value for numeric.type: ", numeric.type)
+  }
+  nonnumeric <- function(x) {
+    ifelse(is.na(numeric(x)), toupper(x), NA)
+  }
+  x <- as.character(x)
+  which.nas <- which(is.na(x))
+  which.blanks <- which(x == "")
+  delimited <- gsub(regex, paste(delim, "\\1", delim, sep = ""), 
+                    x, perl = TRUE)
+  step1 <- strsplit(delimited, delim)
+  step1 <- lapply(step1, function(x) x[x > ""])
+  suppressWarnings(step1.numeric <- lapply(step1, numeric))
+  suppressWarnings(step1.character <- lapply(step1, nonnumeric))
+  maxelem <- max(sapply(step1, length))
+  step1.numeric.t <- lapply(1:maxelem, function(i) {
+    sapply(step1.numeric, function(x) x[i])
+  })
+  step1.character.t <- lapply(1:maxelem, function(i) {
+    sapply(step1.character, function(x) x[i])
+  })
+  rank.numeric <- sapply(step1.numeric.t, rank)
+  rank.character <- sapply(step1.character.t, function(x) as.numeric(factor(x)))
+  rank.numeric[!is.na(rank.character)] <- 0
+  rank.character <- t(t(rank.character) + apply(matrix(rank.numeric), 
+                                                2, max, na.rm = TRUE))
+  rank.overall <- ifelse(is.na(rank.character), rank.numeric, 
+                         rank.character)
+  order.frame <- as.data.frame(rank.overall)
+  if (length(which.nas) > 0) {
+    if (is.na(na.last)) {
+      order.frame[which.nas, ] <- NA
+    }
+    else if (na.last) {
+      order.frame[which.nas, ] <- Inf
+    }
+    else {
+      order.frame[which.nas, ] <- -Inf
+    }
+  }
+  if (length(which.blanks) > 0) {
+    if (is.na(blank.last)) {
+      order.frame[which.blanks, ] <- NA
+    }
+    else if (blank.last) {
+      order.frame[which.blanks, ] <- 1e+99
+    }
+    else {
+      order.frame[which.blanks, ] <- -1e+99
+    }
+  }
+  order.frame <- as.list(order.frame)
+  order.frame$decreasing <- decreasing
+  order.frame$na.last <- NA
+  retval <- do.call("order", order.frame)
+  return(retval)
+}
+
+
diff --git a/R/utils.R b/R/utils.R
index 2b916e6..bf820ec 100644
--- a/R/utils.R
+++ b/R/utils.R
@@ -193,95 +193,6 @@ get_label = function(x, default=names(x)){
 }
 
 
-# Mixed ordering ------------------------------------------------------------------------------
-
-#' @source gtools::mixedsort
-#' @noRd
-#' @keywords internal 
-mixedsort = function (x, decreasing = FALSE, na.last = TRUE, blank.last = FALSE, 
-                      roman.case = c("upper", "lower", "both"), scientific = TRUE) {
-  ord <- mixedorder(x, decreasing = decreasing, na.last = na.last, 
-                    blank.last = blank.last, roman.case = roman.case, scientific = scientific)
-  x[ord]
-}
-
-#' @source gtools::mixedorder
-#' @noRd
-#' @keywords internal
-mixedorder = function (x, decreasing = FALSE, na.last = TRUE, blank.last = FALSE, 
-                       roman.case = c("upper", "lower", "both"), scientific = TRUE) {
-  roman.case <- match.arg(roman.case)
-  if (length(x) == 0) 
-    return(NULL)
-  if (length(x) == 1) 
-    return(x)
-  if (!is.character(x)) {
-    return(x[order(x, decreasing = decreasing, na.last = na.last)])
-  }
-  delim <- "\\$\\@\\$"
-  if (scientific) {
-    regex <- "((?:(?i)(?:[-+]?)(?:(?=[.]?[0123456789])(?:[0123456789]*)(?:(?:[.])(?:[0123456789]{0,}))?)(?:(?:[eE])(?:(?:[-+]?)(?:[0123456789]+))|)))"
-  }
-  else {
-    regex <- "((?:(?i)(?:[-+]?)(?:(?=[.]?[0123456789])(?:[0123456789]*)(?:(?:[.])(?:[0123456789]{0,}))?)))"
-  }
-  numeric <- function(x) as.numeric(x)
-  nonnumeric <- function(x) ifelse(is.na(numeric(x)), toupper(x), 
-                                   NA)
-  x <- as.character(x)
-  which.nas <- which(is.na(x))
-  which.blanks <- which(x == "")
-  delimited <- gsub(regex, paste(delim, "\\1", delim, sep = ""), 
-                    x, perl = TRUE)
-  step1 <- strsplit(delimited, delim)
-  step1 <- lapply(step1, function(x) x[x > ""])
-  step1.numeric <- suppressWarnings(lapply(step1, numeric))
-  step1.character <- suppressWarnings(lapply(step1, nonnumeric))
-  maxelem <- max(sapply(step1, length))
-  step1.numeric.t <- lapply(1:maxelem, function(i) {
-    sapply(step1.numeric, function(x) x[i])
-  })
-  step1.character.t <- lapply(1:maxelem, function(i) {
-    sapply(step1.character, function(x) x[i])
-  })
-  rank.numeric <- sapply(step1.numeric.t, rank)
-  rank.character <- sapply(step1.character.t, function(x) as.numeric(factor(x)))
-  rank.numeric[!is.na(rank.character)] <- 0
-  rank.character <- t(t(rank.character) + apply(matrix(rank.numeric), 
-                                                2, max, na.rm = TRUE))
-  rank.overall <- ifelse(is.na(rank.character), rank.numeric, 
-                         rank.character)
-  order.frame <- as.data.frame(rank.overall)
-  if (length(which.nas) > 0) {
-    if (is.na(na.last)) {
-      order.frame[which.nas, ] <- NA
-    }
-    else if (na.last) {
-      order.frame[which.nas, ] <- Inf
-    }
-    else {
-      order.frame[which.nas, ] <- -Inf
-    }
-  }
-  if (length(which.blanks) > 0) {
-    if (is.na(blank.last)) {
-      order.frame[which.blanks, ] <- NA
-    }
-    else if (blank.last) {
-      order.frame[which.blanks, ] <- 1e+99
-    }
-    else {
-      order.frame[which.blanks, ] <- -1e+99
-    }
-  }
-  order.frame <- as.list(order.frame)
-  order.frame$decreasing <- decreasing
-  order.frame$na.last <- NA
-  retval <- do.call("order", order.frame)
-  return(retval)
-}
-
-
 # NA.RM ---------------------------------------------------------------------------------------
 
 max_narm = function(x, na.rm=TRUE) {