diff --git a/src/maze/mz_hex_walls.scad b/src/maze/mz_hex_walls.scad
index 79a0757a..58b98a59 100644
--- a/src/maze/mz_hex_walls.scad
+++ b/src/maze/mz_hex_walls.scad
@@ -11,6 +11,7 @@
 use <_impl/_mz_hex_walls.scad>
 
 function mz_hex_walls(cells, rows, columns, cell_radius, left_border = true, bottom_border = true) = 
+    echo("mz_hex_walls is deprecated. use maze/mz_hexwalls instead.")
     [
         each [for(cell = cells, wall = _build_cell(cell_radius, cell)) wall],
 
diff --git a/src/maze/mz_square_cells.scad b/src/maze/mz_square_cells.scad
index db22b744..6b122016 100644
--- a/src/maze/mz_square_cells.scad
+++ b/src/maze/mz_square_cells.scad
@@ -13,7 +13,7 @@ use <mz_square_initialize.scad>
 
 function mz_square_cells(rows, columns, start = [0, 0], init_cells, x_wrapping = false, y_wrapping = false, seed) = 
     let(
-        init_undef = is_undef(init_cells),
+        init_undef = echo("mz_square_cells is deprecated. use maze/mz_square.") is_undef(init_cells),
         mz = init_undef ? mz_square_initialize(rows, columns) : init_cells,
         r = len(mz),
         c = len(mz[0]),
diff --git a/src/maze/mz_square_walls.scad b/src/maze/mz_square_walls.scad
index 664237dc..77eedcd7 100644
--- a/src/maze/mz_square_walls.scad
+++ b/src/maze/mz_square_walls.scad
@@ -12,7 +12,7 @@ use <_impl/_mz_square_walls_impl.scad>
 
 function mz_square_walls(cells, rows, columns, cell_width, left_border = true, bottom_border = true) = 
     let(
-        left_walls = left_border ? [for(y = [0:rows - 1]) [[0, cell_width * (y + 1)], [0, cell_width * y]]] : [],
+        left_walls = echo("mz_square_walls is deprecated. use maze/mz_squarewalls instead.") left_border ? [for(y = [0:rows - 1]) [[0, cell_width * (y + 1)], [0, cell_width * y]]] : [],
         buttom_walls = bottom_border ? [for(x = [0:columns - 1]) [[cell_width * x, 0], [cell_width * (x + 1), 0]]] : []
     )
      concat(
diff --git a/src/maze/mz_theta_cells.scad b/src/maze/mz_theta_cells.scad
index 2e7d26f5..d394b903 100644
--- a/src/maze/mz_theta_cells.scad
+++ b/src/maze/mz_theta_cells.scad
@@ -12,7 +12,7 @@ use <_impl/_mz_theta_cells.scad>
 
 function mz_theta_cells(rows, beginning_number, start = [0, 0], seed) =
     let(
-		divided_ratio = 1.5,
+		divided_ratio = echo("mz_theta_cells is deprecated. use maze/mz_theta instead.") 1.5,
 	    before_traveled = config_nbrs(init_theta_maze(rows, beginning_number, divided_ratio)), 
         s = set_visited(before_traveled[start.x][start.y])
 	)
diff --git a/src/rails2sections.scad b/src/rails2sections.scad
index b95aedca..1412a0fa 100644
--- a/src/rails2sections.scad
+++ b/src/rails2sections.scad
@@ -10,4 +10,4 @@
 
 use <matrix/m_transpose.scad>
 
-function rails2sections(rails) = m_transpose(rails);
\ No newline at end of file
+function rails2sections(rails) = echo("rails2sections is deprecated. use maxtrix/m_transpose instead.") m_transpose(rails);
\ No newline at end of file
diff --git a/src/util/bsearch.scad b/src/util/bsearch.scad
index 08c618ca..3a447b87 100644
--- a/src/util/bsearch.scad
+++ b/src/util/bsearch.scad
@@ -11,5 +11,6 @@
 use <_impl/_bsearch_impl.scad>
 
 function bsearch(sorted, target) = 
+    echo("bsearch is deprecated. use util/binary_search instead.")
     is_function(target) ? _bsearch_cmp(sorted, target, 0, len(sorted) - 1) :
                           _bsearch_vt(sorted, target, 0, len(sorted) - 1); // `sorted` is by zyx
\ No newline at end of file
diff --git a/src/util/has.scad b/src/util/has.scad
index 92ced4f7..e8978c6e 100644
--- a/src/util/has.scad
+++ b/src/util/has.scad
@@ -11,5 +11,6 @@
 use <bsearch.scad>
 
 function has(lt, elem, sorted = false) = 
+    echo("has is deprecated. use util/contains instead.")
     sorted ? bsearch(lt, elem) != -1 :
              search([elem], lt) != [[]];
\ No newline at end of file
diff --git a/src/util/sort.scad b/src/util/sort.scad
index 62360b82..a9938e8c 100644
--- a/src/util/sort.scad
+++ b/src/util/sort.scad
@@ -11,6 +11,7 @@
 use <_impl/_sort_impl.scad>
 
 function sort(lt, by = "idx", idx = 0) = 
+    echo("sort is deprecated. use util/sorted instead.")
     is_function(by) ? _sort_by_cmp(lt, by) :  // support function literal
     by == "vt" ? _vt_sort(lt) :      // for example, sort by zyx for a list of points
                  _sort_by(lt, by, idx);
\ No newline at end of file